/* ========================================
   WhoNotFollowing.com - Main Stylesheet
   Mobile-First | PWA Ready | Dark Mode
   ======================================== */

/* ========== CSS RESET & VARIABLES ========== */
:root {
    /* Colors - Light Mode */
    --bg-primary: #FAFAFA;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F3F4F6;
    --text-primary: #1A1A1A;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    
    /* Brand Colors */
    --accent: #E1306C;
    --accent-hover: #C13584;
    --accent-light: rgba(225, 48, 108, 0.1);
    --accent-secondary: #405DE6;
    --gradient-instagram: linear-gradient(45deg, #405DE6, #5851DB, #833AB4, #C13584, #E1306C, #FD1D1D);
    
    /* Semantic Colors */
    --success: #10B981;
    --success-light: rgba(16, 185, 129, 0.1);
    --warning: #F59E0B;
    --warning-light: rgba(245, 158, 11, 0.1);
    --danger: #EF4444;
    --danger-light: rgba(239, 68, 68, 0.1);
    
    /* Borders & Shadows */
    --border: #E5E7EB;
    --border-strong: #D1D5DB;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Typography */
    --font-display: 'Sora', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-Index */
    --z-dropdown: 250;
    --z-sticky: 200;
    --z-modal: 300;
    --z-toast: 400;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #0A0A0A;
    --bg-secondary: #141414;
    --bg-tertiary: #1F1F1F;
    --text-primary: #FFFFFF;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;
    --border: #27272A;
    --border-strong: #3F3F46;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
}

/* ========== BASE RESET ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    touch-action: manipulation;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-hover);
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select {
    font-family: inherit;
    font-size: inherit;
}

img {
    max-width: 100%;
    height: auto;
}

ul, ol {
    list-style: none;
}

/* ========== UTILITIES ========== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.hidden {
    display: none !important;
}

.desktop-only {
    display: none;
}

.mobile-only {
    display: block;
}

@media (min-width: 768px) {
    .desktop-only {
        display: block;
    }
    .mobile-only {
        display: none;
    }
}

/* ========== HEADER ========== */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    padding: 0 var(--space-md);
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Language Selector */
.lang-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-weight: 500;
    transition: background var(--transition-fast);
}

.lang-btn:hover {
    background: var(--border);
}

.lang-flag {
    font-size: 1.1rem;
}

.lang-code {
    font-size: 0.875rem;
}

.chevron {
    transition: transform var(--transition-fast);
}

.lang-selector.open .chevron {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 160px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.lang-selector.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    text-align: left;
    transition: background var(--transition-fast);
}

.lang-option:hover {
    background: var(--bg-tertiary);
}

.lang-option:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.lang-option:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    transition: background var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--border);
}

.theme-icon-dark {
    display: none;
}

[data-theme="dark"] .theme-icon-light {
    display: none;
}

[data-theme="dark"] .theme-icon-dark {
    display: block;
}

/* ========== HERO SECTION ========== */
.hero {
    padding: var(--space-2xl) 0;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    overflow: hidden;
}

.hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    background: var(--gradient-instagram);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.trust-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.badge-icon {
    font-size: 1rem;
}

.badge-highlight {
    border: 2px solid var(--success);
    background: var(--success-light);
    color: var(--text-primary);
    font-weight: 500;
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.3);
}

/* Floating Cards Animation */
.hero-visual {
    position: relative;
    width: 200px;
    height: 150px;
    margin-top: var(--space-xl);
}

.floating-cards {
    position: relative;
    width: 100%;
    height: 100%;
}

.float-card {
    position: absolute;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    animation-delay: 0s;
}

.card-2 {
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    animation-delay: 0.5s;
}

.card-3 {
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(-50%) translateX(0); }
    50% { transform: translateY(calc(-50% - 10px)) translateX(0); }
}

.card-2 {
    animation-name: float2;
}

@keyframes float2 {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* ========== TAGLINE SECTION ========== */
.tagline-section {
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, var(--accent-light) 0%, transparent 50%, rgba(64, 93, 230, 0.05) 100%);
    position: relative;
    overflow: hidden;
}

.tagline-section::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 5%;
    font-size: 8rem;
    font-family: Georgia, serif;
    color: var(--accent);
    opacity: 0.1;
    line-height: 1;
}

.tagline-section::after {
    content: '"';
    position: absolute;
    bottom: -20px;
    right: 5%;
    font-size: 8rem;
    font-family: Georgia, serif;
    color: var(--accent);
    opacity: 0.1;
    line-height: 1;
}

.tagline {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-primary);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

@media (min-width: 768px) {
    .tagline-section {
        padding: var(--space-3xl) 0 calc(var(--space-3xl) + 16px);
    }

    .tagline {
        font-size: 1.5rem;
    }
}

[data-theme="dark"] .tagline-section {
    background: linear-gradient(135deg, rgba(225, 48, 108, 0.08) 0%, transparent 50%, rgba(64, 93, 230, 0.05) 100%);
}

/* ========== GUIDE SECTION ========== */
.guide {
    padding: var(--space-2xl) 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-xl);
}

/* Slideshow Container - Modern Style */
.slideshow-container {
    max-width: 100%;
    margin: 0 auto var(--space-xl);
    padding: 0 var(--space-md);
}

.slideshow-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slideshow-track {
    width: min(80vw, 340px);
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    background: var(--bg-primary);
}

.slideshow-slides {
    display: flex;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

.slideshow-slides .slide {
    min-width: 100%;
    height: auto;
    display: block;
}

.slideshow-slides .slide img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
}

/* Modern Arrow Buttons - Positioned Absolutely */
.slide-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    background: var(--accent);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 6px 20px rgba(225, 48, 108, 0.35);
    transition: opacity 0.2s ease, box-shadow 0.2s ease;
    z-index: 10;
}

.slide-btn.slide-prev {
    left: 0;
}

.slide-btn.slide-next {
    right: 0;
}

.slide-btn svg {
    stroke: white;
    stroke-width: 2.5;
    width: 16px;
    height: 16px;
}

.slide-btn:hover {
    box-shadow: 0 10px 28px rgba(225, 48, 108, 0.45);
}

.slide-btn:active {
    opacity: 0.8;
}

.slide-btn.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Tablet */
@media (min-width: 600px) {
    .slideshow-track {
        width: 400px;
    }

    .slide-btn {
        width: 44px;
        height: 44px;
    }

    .slide-btn svg {
        width: 18px;
        height: 18px;
    }

    .slide-btn.slide-prev {
        left: calc(50% - 200px - 60px);
    }

    .slide-btn.slide-next {
        right: calc(50% - 200px - 60px);
    }
}

/* Desktop */
@media (min-width: 900px) {
    .slideshow-track {
        width: 500px;
    }

    .slide-btn {
        width: 52px;
        height: 52px;
    }

    .slide-btn svg {
        width: 22px;
        height: 22px;
    }

    .slide-btn.slide-prev {
        left: calc(50% - 250px - 70px);
    }

    .slide-btn.slide-next {
        right: calc(50% - 250px - 70px);
    }
}

/* Large Desktop */
@media (min-width: 1200px) {
    .slideshow-track {
        width: 580px;
    }

    .slide-btn.slide-prev {
        left: calc(50% - 290px - 80px);
    }

    .slide-btn.slide-next {
        right: calc(50% - 290px - 80px);
    }
}

.slideshow-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.slideshow-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.slideshow-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-strong);
    cursor: pointer;
    transition: all 0.3s ease;
}

.slideshow-dots .dot:hover {
    background: var(--accent);
    opacity: 0.6;
}

.slideshow-dots .dot.active {
    background: var(--accent);
    width: 24px;
    border-radius: 4px;
}

.slideshow-counter {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* Dark mode slideshow */
[data-theme="dark"] .slideshow-track {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .slide-btn {
    box-shadow: 0 8px 24px rgba(225, 48, 108, 0.25);
}

[data-theme="dark"] .slide-btn:hover {
    box-shadow: 0 12px 32px rgba(225, 48, 108, 0.35);
}

/* Steps Section */
.steps-section {
    padding: var(--space-2xl) 0 var(--space-xl);
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    position: relative;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.step-number {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 28px;
    background: var(--accent);
    color: white;
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(225, 48, 108, 0.3);
}

.step-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.step-title {
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.step-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.step-arrow {
    display: none;
}

@media (min-width: 768px) {
    .steps-container {
        flex-direction: row;
        align-items: center;
        justify-content: center;
    }

    .step {
        flex: 1;
        max-width: 220px;
    }

    .step-arrow {
        display: block;
        font-size: 1.5rem;
        color: var(--text-muted);
    }
}

[data-theme="dark"] .step {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Guide Start Button */
.guide-start {
    text-align: center;
    margin-top: var(--space-lg);
}

.guide-start-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--accent);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 16px rgba(225, 48, 108, 0.3);
    transition: all 0.2s ease;
}

.guide-start-btn:hover {
    background: var(--accent-hover);
    box-shadow: 0 6px 24px rgba(225, 48, 108, 0.4);
    transform: translateY(-2px);
}

/* Guide Modal */
.guide-modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.guide-modal.hidden {
    display: none;
}

.guide-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.guide-modal-content {
    position: relative;
    width: 100%;
    max-width: 400px;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.guide-modal-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-lg);
    background: var(--accent);
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
}

.guide-modal-close {
    position: absolute;
    right: var(--space-md);
    top: var(--space-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: var(--radius-full);
    font-size: 1rem;
    transition: background 0.2s ease;
}

.guide-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.guide-modal-body {
    padding: var(--space-xl);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.guide-modal-text {
    font-size: 1.1rem;
    line-height: 1.6;
    text-align: center;
    color: var(--text-primary);
}

.guide-modal-footer {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.guide-modal-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.guide-modal-prev {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.guide-modal-prev:hover {
    background: var(--border);
}

.guide-modal-prev.hidden {
    visibility: hidden;
}

.guide-modal-next {
    background: var(--accent);
    color: white;
}

.guide-modal-next:hover {
    background: var(--accent-hover);
}

/* ========== UPLOAD SECTION ========== */
.upload-section {
    padding: var(--space-2xl) 0;
}

/* Desktop Drag & Drop */
.upload-area {
    max-width: 500px;
    margin: 0 auto;
    padding: var(--space-2xl);
    background: var(--bg-secondary);
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.upload-area.dragover {
    animation: pulse 1s ease infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

.upload-icon {
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.upload-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.upload-or {
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.upload-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--accent);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.upload-btn:hover {
    background: var(--accent-hover);
}

.upload-hint {
    margin-top: var(--space-md);
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Mobile Upload */
.upload-area-mobile {
    max-width: 400px;
    margin: 0 auto;
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    text-align: center;
}

.upload-icon-mobile {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
}

.upload-btn-mobile {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-lg);
    background: var(--accent);
    color: white;
    font-weight: 600;
    font-size: 1.125rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
    margin-bottom: var(--space-md);
}

.upload-btn-mobile:hover,
.upload-btn-mobile:active {
    background: var(--accent-hover);
}

.btn-icon {
    font-size: 1.25rem;
}

.upload-hint-mobile {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Loading State */
.upload-loading {
    max-width: 400px;
    margin: 0 auto;
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    text-align: center;
}

.file-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.file-icon {
    font-size: 1.5rem;
}

.file-name {
    font-weight: 500;
    color: var(--text-secondary);
}

.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--gradient-instagram);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

.loading-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Error State */
.upload-error {
    max-width: 400px;
    margin: 0 auto;
    padding: var(--space-xl);
    background: var(--danger-light);
    border: 1px solid var(--danger);
    border-radius: var(--radius-xl);
    text-align: center;
}

.error-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.error-title {
    color: var(--danger);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.error-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--space-lg);
}

.retry-btn {
    padding: var(--space-md) var(--space-xl);
    background: var(--danger);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: opacity var(--transition-fast);
}

.retry-btn:hover {
    opacity: 0.9;
}

/* ========== RESULTS SECTION ========== */
.results-section {
    padding: var(--space-2xl) 0;
}

/* Stats Overview */
.stats-overview {
    margin-bottom: var(--space-xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.stat-card {
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
}

.stat-card.stat-highlight {
    background: var(--accent-light);
    border-color: var(--accent);
}

.stat-value {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    color: var(--text-primary);
}

.stat-highlight .stat-value {
    color: var(--accent);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Mutual Rate Bar */
.mutual-rate-bar {
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
}

.rate-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.rate-value {
    color: var(--accent);
    font-weight: 700;
}

.rate-description {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0 0 var(--space-sm) 0;
    font-weight: 400;
}

.rate-bar {
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.rate-fill {
    height: 100%;
    width: 0%;
    background: var(--gradient-instagram);
    border-radius: var(--radius-full);
    transition: width 1s ease;
}

/* Secondary Stats */
.stats-secondary {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.stat-card-sm {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.stat-card-sm.stat-danger {
    background: var(--danger-light);
}

.stat-card-sm.stat-success {
    background: var(--success-light);
}

.stat-card-sm .stat-icon {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
}

.stat-card-sm .stat-value {
    font-size: 1.75rem;
}

.stat-card-sm .stat-label {
    font-size: 0.75rem;
    margin-bottom: var(--space-xs);
}

.infami-count {
    color: var(--danger);
    font-weight: 600;
}

.stat-card-sm .stat-percent {
    font-size: 0.875rem;
    font-weight: 600;
}

.stat-danger .stat-percent {
    color: var(--danger);
}

.stat-success .stat-percent {
    color: var(--success);
}

/* ========== TABS ========== */
.tabs-wrapper {
    position: sticky;
    top: 60px;
    z-index: 100;
    background: var(--bg-primary);
    padding: var(--space-md) 0;
    margin: 0 calc(var(--space-md) * -1);
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

.tabs-nav {
    display: flex;
    gap: var(--space-xs);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
}

.tabs-nav::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.tab-btn:hover {
    border-color: var(--accent);
}

.tab-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.tab-icon {
    font-size: 1rem;
}

.tab-count {
    padding: 2px 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
}

.tab-btn:not(.active) .tab-count {
    background: var(--bg-tertiary);
}

/* ========== TOOLBAR ========== */
.toolbar {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
}

.toolbar-search {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-input {
    width: 100%;
    padding: var(--space-md);
    padding-left: calc(var(--space-md) * 2 + 20px);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.toolbar-filters {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    align-items: center;
}

.sort-chips {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.sort-group {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-xs);
}

.sort-group-icon {
    font-size: 0.875rem;
    padding: 0 var(--space-xs);
}

.sort-chip {
    padding: var(--space-xs) var(--space-sm);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sort-chip:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.sort-chip.active {
    background: var(--accent);
    color: white;
}

.toolbar-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.action-btn:hover {
    background: var(--border);
}

@media (max-width: 767px) {
    .toolbar {
        gap: var(--space-sm);
    }

    .toolbar-filters {
        width: 100%;
        order: -1;
    }

    .sort-chips {
        width: 100%;
    }

    .sort-group {
        flex: 1;
        justify-content: center;
    }

    .sort-chip {
        font-size: 0.75rem;
        padding: var(--space-xs) var(--space-xs);
    }

    .toolbar-actions {
        width: 100%;
        justify-content: center;
    }

    .action-btn .btn-text {
        display: none;
    }
}

@media (min-width: 768px) {
    .toolbar {
        flex-direction: row;
        align-items: center;
        flex-wrap: nowrap;
    }

    .toolbar-search {
        flex: 0 0 auto;
        width: 250px;
    }

    .toolbar-filters {
        flex: 1;
        justify-content: center;
    }

    .toolbar-actions {
        flex: 0 0 auto;
    }
}

/* ========== INFO NOTICE ========== */
.info-notice {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.info-notice-icon {
    font-size: 0.875rem;
    line-height: 1.4;
    flex-shrink: 0;
}

.info-notice-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0;
}

/* ========== USER LIST ========== */
.user-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.user-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.user-item:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex: 1;
    min-width: 0;
}

.user-avatar {
    width: 44px;
    height: 44px;
    background: var(--gradient-instagram);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    flex-shrink: 0;
}

.user-details {
    min-width: 0;
}

.user-username {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 600;
}

.user-username span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.verified-badge {
    color: #3897f0;
    font-size: 1rem;
}

.ghost-badge {
    font-size: 1rem;
    cursor: help;
}

.user-name {
    font-size: 0.875rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-date {
    font-size: 0.75rem;
    color: var(--text-tertiary, #888);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-actions {
    display: flex;
    gap: var(--space-sm);
}

.open-profile-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--accent);
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.open-profile-btn:hover {
    background: var(--accent-hover);
}

/* Mobile: Small icon button */
@media (max-width: 767px) {
    .user-actions {
        flex-shrink: 0;
    }

    .open-profile-btn {
        padding: 0;
        background: none;
        font-size: 1.25rem;
    }

    .open-profile-btn:hover {
        background: none;
    }

    .open-profile-btn .btn-text {
        display: none;
    }
}

/* Load More Button */
.load-more-btn {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--accent);
    font-weight: 500;
    margin-top: var(--space-md);
    transition: all var(--transition-fast);
}

.load-more-btn:hover {
    background: var(--accent-light);
    border-color: var(--accent);
}

/* No Results */
.no-results {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

.no-results-icon {
    display: block;
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

/* ========== SAFETY BANNER ========== */
.safety-banner {
    padding: var(--space-xl) 0;
}

.safety-content {
    padding: var(--space-lg);
    background: var(--warning-light);
    border: 1px solid var(--warning);
    border-radius: var(--radius-lg);
}

.safety-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.safety-icon {
    font-size: 1.5rem;
}

.safety-title {
    font-weight: 600;
    color: var(--warning);
}

.safety-warning {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.safety-tip {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.tip-icon {
    font-size: 1.5rem;
}

.tip-content {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.tip-content strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

/* Cleanup Estimate */
.cleanup-estimate {
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.cleanup-estimate h4 {
    margin-bottom: var(--space-md);
    font-weight: 600;
    text-align: center;
}

.estimate-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    text-align: center;
}

.estimate-item {
    padding: var(--space-md) var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100px;
}

.estimate-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: var(--space-xs);
}

.estimate-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

@media (min-width: 480px) {
    .estimate-grid {
        gap: var(--space-md);
    }

    .estimate-item {
        padding: var(--space-md);
    }

    .estimate-label {
        font-size: 0.75rem;
    }
}

/* ========== PWA BANNER ========== */
.pwa-banner {
    position: fixed;
    bottom: var(--space-md);
    left: var(--space-md);
    right: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-modal);
}

.pwa-content {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex: 1;
}

.pwa-icon {
    font-size: 2rem;
}

.pwa-text {
    display: flex;
    flex-direction: column;
}

.pwa-text strong {
    font-weight: 600;
}

.pwa-text span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.pwa-install-btn {
    padding: var(--space-sm) var(--space-lg);
    background: var(--accent);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.pwa-install-btn:hover {
    background: var(--accent-hover);
}

.pwa-close-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.25rem;
}

/* ========== FOOTER ========== */
.footer {
    padding: var(--space-xl) 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-content {
    text-align: center;
}

.disclaimer {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: var(--accent);
}

.copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ========== BOTTOM SHEET (Mobile Filters) ========== */
.bottom-sheet {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
}

.sheet-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.bottom-sheet:not(.hidden) .sheet-backdrop {
    opacity: 1;
}

.sheet-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: var(--space-lg);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.bottom-sheet:not(.hidden) .sheet-content {
    transform: translateY(0);
}

.sheet-handle {
    width: 40px;
    height: 4px;
    background: var(--border-strong);
    border-radius: var(--radius-full);
    margin: 0 auto var(--space-lg);
}

.sheet-title {
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.sheet-body {
    margin-bottom: var(--space-lg);
}

.filter-group {
    margin-bottom: var(--space-lg);
}

.filter-group label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.sheet-select {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

.sheet-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.sheet-checkbox input {
    width: 20px;
    height: 20px;
    accent-color: var(--accent);
}

.sheet-apply-btn {
    width: 100%;
    padding: var(--space-md);
    background: var(--accent);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.sheet-apply-btn:hover {
    background: var(--accent-hover);
}

/* ========== TOAST NOTIFICATIONS ========== */
.toast-container {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: toastIn 0.3s ease;
}

.toast.success {
    border-color: var(--success);
    background: var(--success-light);
}

.toast.error {
    border-color: var(--danger);
    background: var(--danger-light);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== RESPONSIVE ADJUSTMENTS ========== */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-xl);
    }
    
    .hero {
        padding: var(--space-3xl) 0;
    }
    
    .hero .container {
        flex-direction: row;
        text-align: left;
        justify-content: space-between;
    }
    
    .hero-content {
        flex: 1;
    }
    
    .trust-badges {
        justify-content: flex-start;
    }
    
    .hero-visual {
        margin-top: 0;
        width: 300px;
        height: 200px;
    }
    
    .float-card {
        width: 80px;
        height: 80px;
        font-size: 2.5rem;
    }
}

@media (min-width: 1024px) {
    .header-container {
        padding: 0 var(--space-xl);
    }
    
    .section-title {
        font-size: 2rem;
    }
}

/* ========== SUPPORT SECTION (Buy Me a Coffee) ========== */
.support-section {
    padding: 2rem 0;
}

.support-section.hidden {
    display: none;
}

.support-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.support-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ========== COOKIE BANNER ========== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 1rem;
    z-index: 9999;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
}

.cookie-banner.hidden {
    display: none;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.cookie-text {
    flex: 1;
    min-width: 280px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.cookie-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.cookie-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.9rem;
}

.cookie-link:hover {
    text-decoration: underline;
}

.cookie-accept {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}

.cookie-accept:hover {
    background: var(--primary-dark);
}

@media (max-width: 600px) {
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-text {
        min-width: 100%;
    }

    .cookie-actions {
        width: 100%;
        justify-content: center;
    }
}

/* ========== PRINT STYLES ========== */
@media print {
    .header,
    .upload-section,
    .guide,
    .pwa-banner,
    .footer,
    .toolbar-actions,
    .user-actions {
        display: none !important;
    }
    
    .results-section {
        padding: 0;
    }
    
    .user-list {
        page-break-inside: avoid;
    }
}