/**
 * Anonymous Compliment Inbox - Main Styles
 * Gen-Z Design System - Mobile First
 */

/* ========== CSS VARIABLES ========== */
:root {
    /* Light Theme - Pastel Gradients */
    --bg-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --bg-tertiary: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --bg-warm: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --bg-mint: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    
    /* Text Colors */
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #7a7a9a;
    --text-inverse: #ffffff;
    
    /* Accent Colors */
    --accent-pink: #ff6b9d;
    --accent-purple: #c44569;
    --accent-blue: #667eea;
    --accent-coral: #ff7b7b;
    --accent-gold: #ffd700;
    
    /* Status Colors */
    --success: #43e97b;
    --error: #ff6b6b;
    --warning: #ffd93d;
    --info: #4facfe;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Font */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Dark Theme */
[data-theme="dark"] {
    --glass-bg: rgba(30, 30, 50, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    
    --text-primary: #ffffff;
    --text-secondary: #b0b0c0;
    --text-muted: #707080;
    --text-inverse: #1a1a2e;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 107, 157, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(102, 126, 234, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 123, 123, 0.2) 0%, transparent 40%);
    animation: gradientFloat 20s ease-in-out infinite;
    z-index: -1;
    pointer-events: none;
}

@keyframes gradientFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, 2%) rotate(5deg); }
    66% { transform: translate(-1%, 3%) rotate(-3deg); }
}

/* ========== TYPOGRAPHY ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent-pink), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-center { text-align: center; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.5rem; }
.text-2xl { font-size: 2rem; }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }

/* ========== LAYOUT ========== */
.container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: var(--space-md);

    display: flex;
    flex-direction: column;
}

.page-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    position: relative;
    z-index: 1;
}

/* ========== GLASS CARD ========== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--glass-shadow);
    transition: var(--transition-normal);
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.2);
}

.glass-card-sm {
    padding: var(--space-lg);
    border-radius: var(--radius-md);
}

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    pointer-events: none;
    z-index: 0;
}

.btn:active::after {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-pink), var(--accent-purple));
    color: var(--text-inverse);
    box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 157, 0.5);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.4);
}

.btn-whatsapp {
    background: linear-gradient(135deg, #25D366, #128C7E);
    color: white;
}

.btn-block {
    width: 100%;
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.125rem;
    border-radius: var(--radius-lg);
}

.btn-fab {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    padding: 0;
    font-size: 1.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: 100;
}

/* ========== FORM ELEMENTS ========== */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-pink);
    box-shadow: 0 0 0 3px rgba(255, 107, 157, 0.2);
}

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

textarea.form-input {
    min-height: 120px;
    resize: vertical;
}

.input-group {
    position: relative;
}

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

.input-icon + .form-input {
    padding-left: var(--space-2xl);
}

/* ========== EMOJI PICKER ========== */
.emoji-picker-btn {
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.emoji-picker-btn:hover {
    background: var(--glass-bg);
    transform: scale(1.1);
}

.emoji-picker {
    display: none;
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--glass-shadow);
    z-index: 50;
    max-height: 200px;
    overflow-y: auto;
}

.emoji-picker.active {
    display: block;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: var(--space-xs);
}

.emoji-item {
    font-size: 1.5rem;
    text-align: center;
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.emoji-item:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.2);
}

/* ========== NAVIGATION ========== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--space-md) 0;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-brand .text-gradient {
    background: linear-gradient(135deg, var(--accent-pink) 0%, var(--accent-purple) 50%, var(--accent-coral) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 10px rgba(255, 107, 157, 0.3);
    filter: drop-shadow(0 0 8px rgba(255, 107, 157, 0.2));
}

.nav-links {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.nav-link {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
    background: var(--glass-bg);
    color: var(--text-primary);
}

/* ========== CARDS & MESSAGES ========== */
.message-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.message-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-pink), var(--accent-purple));
}

.message-card.unread {
    box-shadow: 0 0 20px rgba(255, 107, 157, 0.3);
}

.message-card.unread::after {
    content: '';
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    width: 8px;
    height: 8px;
    background: var(--accent-pink);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.message-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.message-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.message-actions {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-md);
}

.reaction-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    padding: var(--space-xs) var(--space-sm);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.reaction-btn:hover, .reaction-btn.active {
    background: var(--glass-bg);
    transform: scale(1.1);
}

.reaction-btn.active {
    background: linear-gradient(135deg, var(--accent-pink), var(--accent-purple));
    border-color: transparent;
}

/* ========== PROFILE CARD ========== */
.profile-card {
    text-align: center;
    padding: var(--space-2xl) var(--space-xl);
}

.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent-pink), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto var(--space-lg);
    box-shadow: 0 8px 30px rgba(255, 107, 157, 0.4);
}

.profile-name {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.profile-handle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--space-lg);
}

/* ========== SHARE BUTTONS ========== */
.share-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.share-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
}

.share-btn:hover {
    transform: translateY(-3px) scale(1.02);
    background: rgba(255, 255, 255, 0.4);
}

.share-btn:active {
    transform: translateY(-1px) scale(0.98);
}

/* WhatsApp styled buttons */
.share-btn[style*="25D366"]:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4);
}

.share-icon {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.share-icon svg {
    display: block;
}

.share-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ========== PRIVACY NOTICE ========== */
.privacy-notice {
    background: linear-gradient(135deg, rgba(67, 233, 123, 0.2), rgba(56, 249, 215, 0.2));
    border: 1px solid rgba(67, 233, 123, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin: var(--space-md) 0;
}

.privacy-notice-title {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 600;
    color: var(--success);
    margin-bottom: var(--space-xs);
    font-size: 0.875rem;
}

.privacy-notice-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ========== EMPTY STATE ========== */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
}

.empty-illustration {
    font-size: 5rem;
    margin-bottom: var(--space-lg);
    animation: float 3s ease-in-out infinite;
}

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

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

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

/* ========== TOAST NOTIFICATIONS ========== */
.toast-container {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    pointer-events: none;
}

.toast {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--glass-shadow);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: toastSlideUp 0.3s ease;
    pointer-events: auto;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--error);
}

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

/* ========== MODAL ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--glass-bg);
    backdrop-filter: blur(30px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    max-width: 90%;
    width: 360px;
    text-align: center;
    transform: scale(0.9);
    transition: var(--transition-normal);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-content .btn {
    margin-top: var(--space-md);
    animation: modalButtonPulse 2s infinite;
}

@keyframes modalButtonPulse {
    0%, 100% { 
        box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
        transform: scale(1);
    }
    50% { 
        box-shadow: 0 6px 25px rgba(255, 107, 157, 0.6);
        transform: scale(1.02);
    }
}

.modal-content .btn:hover {
    animation: none;
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(255, 107, 157, 0.5);
}

.modal-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

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

/* ========== CONFETTI ========== */
.confetti-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    overflow: hidden;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    animation: confettiFall 3s ease-out forwards;
}

@keyframes confettiFall {
    0% {
        opacity: 1;
        transform: translateY(-100%) rotate(0deg);
    }
    100% {
        opacity: 0;
        transform: translateY(100vh) rotate(720deg);
    }
}

/* ========== THEME TOGGLE ========== */
.theme-toggle {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.25rem;
    transition: var(--transition-normal);
}

.theme-toggle:hover {
    transform: rotate(180deg);
}

/* ========== STATS ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}

.stat-item {
    text-align: center;
    padding: var(--space-md);
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-pink);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* ========== DIVIDER ========== */
.divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--glass-border);
}

/* ========== LOADING SPINNER ========== */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========== ERROR/SUCCESS MESSAGES ========== */
.alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    font-size: 0.875rem;
}

.alert-error {
    background: rgba(255, 107, 107, 0.2);
    border: 1px solid rgba(255, 107, 107, 0.3);
    color: #ff6b6b;
}

.alert-success {
    background: rgba(67, 233, 123, 0.2);
    border: 1px solid rgba(67, 233, 123, 0.3);
    color: #2ecc71;
}


/* ========== RESPONSIVE ========== */
@media (min-width: 768px) {
    .container {
        max-width: 600px;
    }
    
    .glass-card {
        padding: var(--space-2xl);
    }
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* ========== UTILITY ========== */
.hidden { display: none !important; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mt-lg { margin-top: var(--space-lg); }
.w-full { width: 100%; }