/**
 * IMMORTAL NEXUS - UNIFIED THEME SYSTEM
 * Consolidated from: immortal-enhanced, mobile-immortal-enhanced, mobile-enhanced, mobile-ux-enhanced
 * Mobile-first responsive design
 *
 * Structure:
 * 1. Base Styles (Mobile-First)
 * 2. Cosmic Background
 * 3. Typography
 * 4. Navigation & Header
 * 5. Buttons
 * 6. Cards & Containers
 * 7. Forms
 * 8. Modals
 * 9. Scrollbar
 * 10. Footer
 * 11. Utilities
 * 12. Tablet Styles (768px+)
 * 13. Desktop Styles (1024px+)
 * 14. Accessibility & Performance
 */

/* ============================================================================
   1. BASE STYLES (MOBILE-FIRST)
   ============================================================================ */

body {
    position: relative;
    overflow-x: hidden;
    font-size: 16px;
    line-height: 1.6;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

/* Safe area insets for notched devices */
@supports (padding: max(0px)) {
    body {
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
        padding-bottom: max(0px, env(safe-area-inset-bottom));
    }
}

/* Word wrapping */
body, p, div, article {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Content above cosmic background */
main, header, footer, nav {
    position: relative;
    z-index: 10;
}

/* Main content spacing for fixed header */
main {
    padding-top: 70px;
}

/* Minimum touch targets (44x44px) */
.btn,
button,
a.btn,
input[type="button"],
input[type="submit"] {
    min-height: 44px;
    min-width: 44px;
}

/* Icon buttons */
button[class*="icon"],
.theme-toggle,
.icon-btn {
    min-width: 44px;
    min-height: 44px;
    padding: 0.75rem;
}

/* Touch feedback */
.btn:active,
button:active,
a:active {
    transform: scale(0.98);
    opacity: 0.9;
}

/* ============================================================================
   2. COSMIC BACKGROUND (Performance Optimized - Static)
   ============================================================================ */

body {
    background: radial-gradient(ellipse at bottom, #1a0d33 0%, #0a0515 100%);
}

/* Static Starfield - NO ANIMATION for scroll performance */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(1px 1px at 60% 70%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 40% 50%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 90% 40%, rgba(255, 255, 255, 0.3), transparent);
    pointer-events: none;
    z-index: 0;
}

/* Static Nebula - NO ANIMATION for scroll performance */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 30% 40%, rgba(255, 94, 120, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 60%, rgba(74, 222, 128, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

/* ============================================================================
   3. TYPOGRAPHY
   ============================================================================ */

/* Mobile typography */
h1, .hero h1, h1.eternal {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
    line-height: 1.2;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.5rem;
    line-height: 1.3;
}

h3 {
    font-size: 1.25rem;
    line-height: 1.4;
}

p {
    font-size: 1rem;
    line-height: 1.6;
}

/* Mystical text glow (reduced for mobile performance) */
.eternal-glow,
.text-immortal-glow,
h1.eternal,
.hero-content h1 {
    text-shadow:
        0 0 8px rgba(255, 94, 120, 0.4),
        0 0 15px rgba(255, 94, 120, 0.2);
}

.ancient-text {
    font-family: 'Cinzel', Georgia, serif;
    letter-spacing: 0.05em;
}

/* ============================================================================
   4. NAVIGATION & HEADER
   ============================================================================ */

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg,
        rgba(26, 27, 78, 0.98) 0%,
        rgba(22, 33, 62, 0.98) 100%);
    border-bottom: 1px solid rgba(255, 94, 120, 0.3);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    /* FLEX LAYOUT - logo left, controls right */
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

@supports (padding: max(0px)) {
    header {
        padding-top: max(0.75rem, env(safe-area-inset-top));
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
    }
}

/* Logo container */
.logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text);
}

.logo i {
    font-size: 1.5rem;
    color: rgba(255, 94, 120, 0.9);
}

.logo .full-title {
    display: none;
}

.logo .short-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    color: var(--text);
}

/* Header controls container - RIGHT SIDE */
.header-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 1; /* Allow shrinking on mobile to prevent overflow */
    min-width: 0; /* Allow flex item to shrink below content size */
    /* Allow overflow for dropdowns */
    overflow: visible;
}

/* User menu avatar constraint */
.user-menu,
#userMenuContainer {
    flex-shrink: 1; /* Allow shrinking on mobile */
    min-width: 0;
    position: relative;
}

.user-menu img,
.user-avatar,
#userMenuContainer img,
#userMenuAvatar {
    width: 32px;
    height: 32px;
    min-width: 32px;
    max-width: 32px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

/* User menu button */
.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.6rem;
    background: rgba(255, 94, 120, 0.15);
    border: 1px solid rgba(255, 94, 120, 0.3);
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.user-menu-btn:hover {
    background: rgba(255, 94, 120, 0.25);
    border-color: rgba(255, 94, 120, 0.5);
}

/* Hide username on very small screens, show only avatar */
.user-menu-btn #userMenuName {
    display: none;
}

.user-menu-btn i.fa-chevron-down {
    font-size: 0.7rem;
    opacity: 0.7;
}

/* Hide empty notification/user containers when not logged in */
.notification-icon-container:empty,
.user-menu:empty,
#notificationIconContainer:empty,
#userMenuContainer:empty {
    display: none;
}

/* Style containers when present */
.notification-icon-container:not(:empty),
.user-menu:not(:empty),
#notificationIconContainer:not(:empty),
#userMenuContainer:not(:empty) {
    display: flex;
    align-items: center;
}

/* Hide desktop main nav on mobile */
.main-nav {
    display: none;
}

/* Mobile nav toggle */
.mobile-nav-toggle {
    display: flex;
    min-width: 44px;
    min-height: 44px;
    padding: 0.75rem;
    background: rgba(255, 94, 120, 0.2);
    border: 1px solid rgba(255, 94, 120, 0.4);
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-nav-toggle:hover,
.mobile-nav-toggle:active {
    background: rgba(255, 94, 120, 0.3);
    box-shadow: 0 0 15px rgba(255, 94, 120, 0.3);
}

/* Mobile navigation sidebar */
.mobile-nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85vw;
    max-width: 320px;
    height: 100vh;
    background: linear-gradient(135deg,
        rgba(26, 13, 51, 0.98) 0%,
        rgba(16, 16, 33, 0.98) 100%);
    border-right: 2px solid rgba(255, 94, 120, 0.4);
    z-index: 1100;
    padding: 1.5rem;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transition: left 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 4px 0 30px rgba(0, 0, 0, 0.5);
}

@supports (padding: max(0px)) {
    .mobile-nav {
        padding-top: max(1.5rem, env(safe-area-inset-top));
        padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
    }
}

.mobile-nav.active {
    left: 0;
}

/* Mobile nav overlay */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 5, 21, 0.8);
    z-index: 1050;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.mobile-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Mobile nav list */
.mobile-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav-list li {
    margin-bottom: 0.5rem;
}

.mobile-nav-list a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    color: var(--text);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.mobile-nav-list a:hover,
.mobile-nav-list a:active {
    background: rgba(255, 94, 120, 0.2);
    border-left-color: rgba(255, 94, 120, 0.8);
    transform: translateX(5px);
}

.mobile-nav-list a i {
    width: 24px;
    text-align: center;
    color: rgba(255, 94, 120, 0.8);
}

/* Prevent scroll when menu open */
body.mobile-nav-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

/* Notification icon */
.notification-icon {
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 94, 120, 0.2);
    border: 1px solid rgba(255, 94, 120, 0.4);
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.notification-icon:hover,
.notification-icon:active {
    background: rgba(255, 94, 120, 0.3);
    box-shadow: 0 0 15px rgba(255, 94, 120, 0.3);
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 20px;
    height: 20px;
    background: rgba(255, 94, 120, 0.9);
    border: 2px solid rgba(26, 27, 78, 0.98);
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

/* Notification dropdown on mobile */
.notifications-dropdown,
.notification-panel {
    position: fixed;
    top: 70px;
    right: 1rem;
    left: 1rem;
    width: auto;
    max-width: none;
    max-height: calc(100vh - 90px);
    background: linear-gradient(135deg,
        rgba(26, 13, 51, 0.98) 0%,
        rgba(16, 16, 33, 0.98) 100%);
    border: 2px solid rgba(255, 94, 120, 0.4);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 1050;
}

/* User menu button */
.user-menu-button,
.user-avatar-button {
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: rgba(255, 94, 120, 0.2);
    border: 1px solid rgba(255, 94, 120, 0.4);
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s ease;
}

.user-menu-button:hover,
.user-menu-button:active,
.user-avatar-button:hover,
.user-avatar-button:active {
    background: rgba(255, 94, 120, 0.3);
    box-shadow: 0 0 15px rgba(255, 94, 120, 0.3);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

/* User dropdown on mobile */
.user-dropdown,
.user-menu-dropdown {
    position: fixed;
    top: 70px;
    right: 1rem;
    width: calc(100vw - 2rem);
    max-width: 320px;
    background: linear-gradient(135deg,
        rgba(26, 13, 51, 0.98) 0%,
        rgba(16, 16, 33, 0.98) 100%);
    border: 2px solid rgba(255, 94, 120, 0.4);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: 1050;
    overflow: hidden;
}

.user-dropdown a,
.user-menu-dropdown a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    color: var(--text);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    min-height: 44px;
}

.user-dropdown a:hover,
.user-dropdown a:active,
.user-menu-dropdown a:hover,
.user-menu-dropdown a:active {
    background: rgba(255, 94, 120, 0.2);
    border-left-color: rgba(255, 94, 120, 0.8);
}

/* ============================================================================
   5. BUTTONS
   ============================================================================ */

.btn,
button:not(.theme-toggle):not([class*="icon-"]):not(.close-sidebar):not(.mobile-nav-toggle):not([class^="ql-"]) {
    position: relative;
    padding: 1rem 1.5rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-transform: uppercase;
    font-size: 0.875rem;
}

.btn-primary {
    background: linear-gradient(135deg,
        rgba(255, 94, 120, 0.9) 0%,
        rgba(212, 175, 55, 0.9) 100%);
    border: 1px solid rgba(255, 94, 120, 0.6);
    color: #ffffff;
    box-shadow:
        0 4px 15px rgba(255, 94, 120, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* Shimmer Effect */
.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        0 6px 20px rgba(255, 94, 120, 0.4),
        0 0 30px rgba(255, 94, 120, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-outline {
    background: rgba(26, 13, 51, 0.9);
    border: 2px solid rgba(255, 94, 120, 0.5);
    color: var(--text);
}

.btn-outline:hover {
    background: rgba(255, 94, 120, 0.2);
    border-color: rgba(255, 94, 120, 0.8);
    box-shadow:
        0 0 20px rgba(255, 94, 120, 0.3),
        inset 0 0 20px rgba(255, 94, 120, 0.1);
    transform: translateY(-2px);
}

/* Hero buttons mobile */
.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

.hero-buttons .btn {
    width: 100%;
    justify-content: center;
}

/* ============================================================================
   6. CARDS & CONTAINERS
   ============================================================================ */

/* Ornate Card Design */
.feature-card,
.soul-card,
.debate-arena,
.highlight,
[class*="card"] {
    position: relative;
    background: linear-gradient(135deg,
        rgba(26, 13, 51, 0.95) 0%,
        rgba(16, 16, 33, 0.98) 50%,
        rgba(26, 26, 46, 0.95) 100%);
    border: 1px solid rgba(255, 94, 120, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Ornate Corner Decorations */
.feature-card::before,
.soul-card::before,
.debate-arena::before {
    content: '\2726'; /* ✦ */
    position: absolute;
    top: 8px;
    left: 8px;
    font-size: 0.875rem;
    color: rgba(255, 94, 120, 0.6);
}

.feature-card::after,
.soul-card::after,
.debate-arena::after {
    content: '\2726'; /* ✦ */
    position: absolute;
    bottom: 8px;
    right: 8px;
    font-size: 0.875rem;
    color: rgba(74, 222, 128, 0.6);
}

/* Mystical Border Glow on Hover */
.feature-card:hover,
.soul-card:hover,
.debate-arena:hover {
    border-color: rgba(255, 94, 120, 0.6);
    box-shadow:
        0 0 20px rgba(255, 94, 120, 0.2),
        0 0 40px rgba(255, 94, 120, 0.1),
        inset 0 0 60px rgba(255, 94, 120, 0.05);
    transform: translateY(-4px);
}

/* Soul cards grid to single column on mobile */
.souls-grid,
.feature-grid,
.features-grid,
[class*="grid"]:not(.header-controls) {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Section spacing */
section {
    padding: 3rem 1.5rem;
}

.container {
    padding-left: 1rem;
    padding-right: 1rem;
    max-width: 100%;
}

/* Hero section */
.hero {
    position: relative;
    padding: 4rem 1.5rem;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center,
        rgba(255, 94, 120, 0.1) 0%,
        transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero p {
    font-size: 1.125rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

/* ============================================================================
   7. FORMS
   ============================================================================ */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
textarea,
select {
    width: 100%;
    background: rgba(26, 13, 51, 0.8);
    border: 1px solid rgba(255, 94, 120, 0.3);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text);
    font-family: inherit;
    font-size: 16px; /* Prevents zoom on iOS */
    min-height: 44px;
    transition: all 0.3s ease;
}

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

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: rgba(255, 94, 120, 0.6);
    box-shadow:
        0 0 0 3px rgba(255, 94, 120, 0.1),
        0 0 20px rgba(255, 94, 120, 0.2);
}

input::placeholder,
textarea::placeholder {
    color: rgba(201, 179, 224, 0.5);
}

.form-group,
[class*="form-group"] {
    margin-bottom: 1.25rem;
}

label {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}

/* ============================================================================
   8. MODALS
   ============================================================================ */

.modal-overlay {
    background: rgba(10, 5, 21, 0.95);
}

.modal,
[class*="modal"][class*="content"] {
    width: 95vw;
    max-width: 95vw;
    max-height: 90vh;
    margin: 5vh auto;
    background: linear-gradient(135deg,
        rgba(26, 13, 51, 0.98) 0%,
        rgba(16, 16, 33, 0.98) 100%);
    border: 2px solid rgba(255, 94, 120, 0.4);
    border-radius: 12px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(255, 94, 120, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.modal-header,
[class*="modal"] header {
    padding: 1rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 10;
    background: inherit;
}

.modal-body,
[class*="modal"] .body {
    padding: 1.5rem;
    max-height: calc(90vh - 140px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.modal-footer,
[class*="modal"] footer {
    padding: 1rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: sticky;
    bottom: 0;
    background: inherit;
}

.modal-footer button,
[class*="modal"] footer button {
    width: 100%;
}

/* Close button */
.close-modal,
.modal-close {
    min-width: 44px;
    min-height: 44px;
    font-size: 24px;
}

/* ============================================================================
   9. SCROLLBAR
   ============================================================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(13, 13, 26, 0.5);
    border-left: 1px solid rgba(255, 94, 120, 0.2);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg,
        rgba(255, 94, 120, 0.6) 0%,
        rgba(212, 175, 55, 0.6) 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg,
        rgba(255, 94, 120, 0.8) 0%,
        rgba(212, 175, 55, 0.8) 100%);
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 94, 120, 0.6) rgba(13, 13, 26, 0.5);
}

/* ============================================================================
   10. FOOTER
   ============================================================================ */

footer {
    background: linear-gradient(135deg,
        rgba(16, 16, 33, 0.95) 0%,
        rgba(26, 26, 46, 0.95) 100%);
    border-top: 1px solid rgba(255, 94, 120, 0.3);
    padding: 2rem 1.5rem 1.5rem;
    margin-top: 4rem;
    text-align: center;
}

footer nav {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

footer a {
    color: var(--text-secondary);
    transition: all 0.3s ease;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

footer a:hover {
    color: rgba(255, 94, 120, 0.9);
    text-shadow: 0 0 10px rgba(255, 94, 120, 0.3);
}

/* ============================================================================
   11. UTILITIES
   ============================================================================ */

.mystical-glow {
    box-shadow: 0 0 20px rgba(255, 94, 120, 0.4);
}

.constellation-border {
    border: 1px solid rgba(255, 94, 120, 0.3);
    box-shadow: 0 0 10px rgba(255, 94, 120, 0.2);
}

/* Constellation pattern dividers */
.constellation-divider {
    width: 100%;
    height: 2px;
    margin: 3rem 0;
    position: relative;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 94, 120, 0.4) 20%,
        rgba(255, 94, 120, 0.6) 50%,
        rgba(255, 94, 120, 0.4) 80%,
        transparent 100%);
}

/* Loading spinner */
.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 94, 120, 0.2);
    border-top-color: rgba(255, 94, 120, 0.8);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg,
        rgba(26, 13, 51, 0.6) 25%,
        rgba(45, 27, 78, 0.8) 50%,
        rgba(26, 13, 51, 0.6) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Mobile utility classes */
.mobile-center {
    text-align: center;
}

.mobile-stack {
    flex-direction: column;
}

.mobile-full-width {
    width: 100%;
}

.hide-mobile {
    display: none;
}

.show-mobile {
    display: block;
}

/* ============================================================================
   12. TABLET STYLES (768px+)
   ============================================================================ */

@media (min-width: 768px) {
    main {
        padding-top: 80px;
    }

    /* Show desktop nav */
    .main-nav {
        display: flex;
        position: relative;
        background: transparent;
        border-bottom: none;
        box-shadow: none;
        padding: 0;
    }

    .main-nav a {
        position: relative;
        padding: 0.75rem 1.25rem;
        color: var(--text);
        transition: all 0.3s ease;
        font-weight: 500;
        letter-spacing: 0.3px;
    }

    .main-nav a::before {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        width: 0;
        height: 2px;
        background: linear-gradient(90deg,
            transparent,
            rgba(255, 94, 120, 0.8),
            transparent);
        transform: translateX(-50%);
        transition: width 0.3s ease;
    }

    .main-nav a:hover::before {
        width: 80%;
    }

    .main-nav a:hover {
        color: rgba(255, 94, 120, 0.9);
        text-shadow: 0 0 10px rgba(255, 94, 120, 0.5);
    }

    /* Hide mobile nav toggle */
    .mobile-nav-toggle {
        display: none;
    }

    /* Show username on tablet+ */
    .user-menu-btn #userMenuName {
        display: inline;
        max-width: 120px;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* Larger avatar on tablet+ */
    .user-menu img,
    .user-avatar,
    #userMenuContainer img,
    #userMenuAvatar {
        width: 36px;
        height: 36px;
        min-width: 36px;
        max-width: 36px;
    }

    /* Typography */
    h1, .hero h1, h1.eternal {
        font-size: clamp(2rem, 6vw, 3.5rem);
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    /* Cards grid */
    .souls-grid,
    .feature-grid,
    .features-grid,
    [class*="grid"]:not(.header-controls) {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .feature-card,
    .soul-card,
    .debate-arena {
        padding: 2rem;
    }

    /* Corner decorations larger */
    .feature-card::before,
    .soul-card::before,
    .feature-card::after,
    .soul-card::after {
        font-size: 1rem;
        top: 12px;
        left: 12px;
    }

    .feature-card::after,
    .soul-card::after {
        bottom: 12px;
        right: 12px;
    }

    /* Hero */
    .hero {
        padding: 5rem 2rem;
    }

    .hero-buttons {
        flex-direction: row;
        justify-content: center;
        width: auto;
    }

    .hero-buttons .btn {
        width: auto;
    }

    /* Modals */
    .modal,
    [class*="modal"][class*="content"] {
        max-width: 600px;
        border-radius: 16px;
    }

    .modal-footer,
    [class*="modal"] footer {
        flex-direction: row;
        justify-content: flex-end;
    }

    .modal-footer button,
    [class*="modal"] footer button {
        width: auto;
    }

    /* Notification/User dropdowns */
    .notifications-dropdown,
    .notification-panel {
        position: absolute;
        top: 100%;
        right: 0;
        left: auto;
        width: 350px;
        max-width: 350px;
    }

    .user-dropdown,
    .user-menu-dropdown {
        position: absolute;
        top: 100%;
        right: 0;
        width: 280px;
    }

    /* Footer */
    footer {
        padding: 3rem 2rem 2rem;
    }

    footer nav {
        flex-direction: row;
        justify-content: center;
        gap: 2rem;
    }

    /* Scrollbar */
    ::-webkit-scrollbar {
        width: 12px;
        height: 12px;
    }

    ::-webkit-scrollbar-thumb {
        border: 2px solid rgba(13, 13, 26, 0.5);
        border-radius: 6px;
    }

    /* Utilities */
    .hide-mobile {
        display: block;
    }

    .show-mobile {
        display: none;
    }
}

/* ============================================================================
   13. DESKTOP STYLES (1024px+)
   ============================================================================ */

@media (min-width: 1024px) {
    /* Typography with enhanced glow */
    .eternal-glow,
    .text-immortal-glow,
    h1.eternal,
    .hero-content h1 {
        text-shadow:
            0 0 10px rgba(255, 94, 120, 0.5),
            0 0 20px rgba(255, 94, 120, 0.3),
            0 0 30px rgba(255, 94, 120, 0.2),
            0 0 40px rgba(255, 94, 120, 0.1);
        animation: textGlow 4s ease-in-out infinite alternate;
    }

    @keyframes textGlow {
        0% {
            text-shadow:
                0 0 10px rgba(255, 94, 120, 0.5),
                0 0 20px rgba(255, 94, 120, 0.3),
                0 0 30px rgba(255, 94, 120, 0.2);
        }
        100% {
            text-shadow:
                0 0 15px rgba(255, 94, 120, 0.7),
                0 0 25px rgba(255, 94, 120, 0.5),
                0 0 35px rgba(255, 94, 120, 0.3),
                0 0 50px rgba(255, 94, 120, 0.2);
        }
    }

    /* Corner decoration animations */
    .feature-card::before,
    .soul-card::before,
    .debate-arena::before,
    .feature-card::after,
    .soul-card::after,
    .debate-arena::after {
        animation: cornerPulse 3s ease-in-out infinite;
    }

    .feature-card::after,
    .soul-card::after,
    .debate-arena::after {
        animation-delay: 1.5s;
    }

    @keyframes cornerPulse {
        0%, 100% {
            opacity: 0.6;
            transform: scale(1) rotate(0deg);
        }
        50% {
            opacity: 1;
            transform: scale(1.2) rotate(90deg);
        }
    }

    /* Cards grid 3 columns */
    .souls-grid,
    .feature-grid,
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-card:hover,
    .soul-card:hover,
    .debate-arena:hover {
        transform: translateY(-8px) scale(1.02);
        box-shadow:
            0 10px 30px rgba(0, 0, 0, 0.3),
            0 0 40px rgba(255, 94, 120, 0.2),
            inset 0 0 80px rgba(255, 94, 120, 0.05);
    }

    /* Hero */
    .hero {
        padding: 6rem 2rem;
    }

    .hero h1 {
        font-size: clamp(2.5rem, 6vw, 5rem);
        margin-bottom: 1.5rem;
    }

    .hero p {
        font-size: clamp(1.125rem, 2vw, 1.5rem);
        max-width: 700px;
        margin: 0 auto 2.5rem;
    }

    /* Constellation divider stars */
    .constellation-divider::before,
    .constellation-divider::after {
        content: '\22C6'; /* ⋆ */
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        color: rgba(255, 94, 120, 0.8);
        font-size: 1.5rem;
        animation: starTwinkle 2s ease-in-out infinite;
    }

    .constellation-divider::before {
        left: 0;
    }

    .constellation-divider::after {
        right: 0;
        animation-delay: 1s;
    }

    @keyframes starTwinkle {
        0%, 100% { opacity: 0.8; transform: translateY(-50%) scale(1); }
        50% { opacity: 1; transform: translateY(-50%) scale(1.3); }
    }

    /* Buttons */
    .btn,
    button:not(.theme-toggle):not([class*="icon-"]):not([class^="ql-"]) {
        padding: 0.875rem 2rem;
    }
}

/* ============================================================================
   14. ACCESSIBILITY & PERFORMANCE
   ============================================================================ */

/* Focus indicators */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid rgba(255, 94, 120, 0.8);
    outline-offset: 2px;
}

/* Skip to content link */
.skip-to-content {
    position: fixed;
    top: -100px;
    left: 10px;
    z-index: 10000;
    padding: 0.75rem 1rem;
    background: rgba(255, 94, 120, 0.9);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: top 0.3s ease;
}

.skip-to-content:focus {
    top: 10px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    body::before,
    body::after {
        animation: none !important;
    }

    .loading-spinner,
    .skeleton {
        animation: none;
    }
}

/* PWA optimizations */
@media (display-mode: standalone) {
    header {
        padding-top: max(1rem, env(safe-area-inset-top));
    }

    .install-prompt {
        display: none;
    }

    body {
        background-attachment: fixed;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2),
       (min-resolution: 192dpi) {
    .feature-card,
    .soul-card,
    .btn,
    input,
    textarea {
        border-width: 0.5px;
    }
}

/* Print styles */
@media print {
    body::before,
    body::after,
    .mobile-menu-toggle,
    .theme-toggle,
    .floating-theme-toggle {
        display: none !important;
    }

    body {
        background: white !important;
        color: black !important;
    }

    .feature-card,
    .soul-card {
        border: 1px solid #333;
        page-break-inside: avoid;
    }
}

/* Landscape mobile */
@media (max-width: 768px) and (orientation: landscape) and (max-height: 500px) {
    .hero {
        padding: 2rem 1.5rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .modal {
        max-height: 85vh;
    }

    header {
        padding: 0.75rem 1.5rem;
    }
}

/* Small mobile (< 375px) */
@media (max-width: 374px) {
    body {
        font-size: 14px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .feature-card,
    .soul-card {
        padding: 1rem;
    }

    .btn {
        font-size: 0.8125rem;
        padding: 0.75rem 1rem;
    }

    section {
        padding: 2rem 1rem;
    }
}