/* =====================================================
   BASE STYLES - Reset & Core Elements
   ===================================================== */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    font-weight: 600;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: var(--space-xl);
    padding-bottom: 300px; /* Space for ground */
    overflow-x: hidden;
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-dark);
    line-height: 1.6;
    position: relative;
}

/* ========================================
   GROUND FLOOR
======================================== */
.ground-floor {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background-color: #090430;
    z-index: 50;
    pointer-events: none;
}

/* ========================================
   SITE PET (KITTY SPRITE)
======================================== */
.site-pet {
    position: fixed;
    left: 30px;
    z-index: 60;
    pointer-events: none;
    overflow: hidden;
    /* Width/height set dynamically by JS based on sprite */
}

.site-pet img {
    object-fit: cover;
    object-position: 0 0;
    image-rendering: auto;
    /* Width/height set dynamically by JS based on sprite */
}


/* Responsive adjustments for pet */
@media (max-width: 768px) {
    .site-pet {
        left: 15px;
        bottom: 0;
        transform: scale(0.7);
        transform-origin: bottom left;
    }
}

@media (max-width: 480px) {
    .site-pet {
        left: 10px;
        bottom: 0;
        transform: scale(0.5);
        transform-origin: bottom left;
    }
}

/* ========================================
   SELECTION
======================================== */
::selection {
    background: var(--pink-light);
    color: var(--text-dark);
}

::-moz-selection {
    background: var(--pink-light);
    color: var(--text-dark);
}

/* ========================================
   SCROLLBAR
======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--purple-pale);
    border-radius: var(--radius-round);
}

::-webkit-scrollbar-thumb {
    background: var(--purple-light);
    border-radius: var(--radius-round);
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--purple-medium);
}

/* ========================================
   TYPOGRAPHY
======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1.2;
}

p {
    margin-bottom: var(--space-md);
}

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

a:hover {
    color: var(--pink-dark);
}

/* ========================================
   BUTTONS BASE
======================================== */
button {
    font-family: var(--font-main);
    font-weight: 700;
    cursor: pointer;
    border: none;
    background: transparent;
    transition: all var(--transition-bounce);
}

button:focus-visible {
    outline: 3px solid var(--pink-hot);
    outline-offset: 2px;
}

/* ========================================
   IMAGES
======================================== */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   LISTS
======================================== */
ul, ol {
    list-style: none;
}

/* ========================================
   UTILITY CLASSES
======================================== */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========================================
   DEVICE FRAME - MAIN CONTAINER
======================================== */
.device-frame {
    position: relative;
    width: 100%;
    max-width: 750px;
    background: var(--device-gradient);
    border-radius: var(--radius-xl);
    padding: var(--space-md);
    box-shadow: var(--shadow-medium);
    border: 3px solid var(--white);
    z-index: var(--z-default);
    background-image: 
        radial-gradient(ellipse at top left, rgba(255,255,255,0.4) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(200,180,230,0.3) 0%, transparent 50%);
    animation: deviceAppear 0.8s var(--transition-bounce) forwards;
}

@keyframes deviceAppear {
    0% {
        opacity: 0;
        transform: scale(0.9) translateY(30px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ========================================
   DEVICE TOP BAR
======================================== */
.device-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-sm);
}

.topbar-date {
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: 0.5px;
}

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

.topbar-btn {
    position: relative;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    color: var(--text-dark);
}

.topbar-btn:hover {
    background: rgba(255,255,255,0.3);
}

.topbar-btn .material-icons {
    font-size: 20px;
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    min-width: 16px;
    height: 16px;
    background: var(--pink-hot);
    color: var(--white);
    font-size: 10px;
    font-weight: 700;
    border-radius: var(--radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    opacity: 0;
    transform: scale(0);
    transition: all var(--transition-bounce);
}

.notification-badge.show {
    opacity: 1;
    transform: scale(1);
}

.icon-wifi {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 12px;
}

.wifi-bar {
    width: 3px;
    background: var(--text-dark);
    border-radius: 2px;
}

.wifi-bar:nth-child(1) { height: 4px; }
.wifi-bar:nth-child(2) { height: 7px; }
.wifi-bar:nth-child(3) { height: 10px; }

.icon-battery {
    width: 22px;
    height: 10px;
    border: 2px solid var(--text-dark);
    border-radius: 3px;
    position: relative;
    padding: 1px;
}

.icon-battery::after {
    content: '';
    position: absolute;
    right: -4px;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 5px;
    background: var(--text-dark);
    border-radius: 0 2px 2px 0;
}

.battery-level {
    display: block;
    width: 100%;
    height: 100%;
    background: var(--text-dark);
    border-radius: 1px;
}

/* ========================================
   MAIN CONTENT AREA
======================================== */
.main-content {
    background: var(--content-gradient);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 2px solid var(--white);
    background-image: 
        radial-gradient(circle, rgba(255,255,255,0.5) 1px, transparent 1px);
    backdrop-filter: blur(50px);
    background-size: 20px 20px;
    min-height: 500px;
}

/* ========================================
   NAVIGATION TABS
======================================== */
.nav-tabs {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    background: rgba(255,255,255,0.5);
    padding: var(--space-xs);
    border-radius: var(--radius-round);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-round);
    font-size: 12px;
    color: var(--text-medium);
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-tab .material-icons {
    font-size: 16px;
}

.nav-tab:hover {
    background: rgba(255,255,255,0.5);
    color: var(--text-dark);
}

.nav-tab.active {
    background: var(--white);
    color: var(--text-dark);
    box-shadow: var(--shadow-soft);
}

/* ========================================
   TAB CONTENT
======================================== */
.tab-content {
    display: none;
    animation: fadeInTab 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeInTab {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   SECTION TITLES
======================================== */
.section-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: var(--space-xs);
}

.section-title .material-icons {
    color: var(--pink-hot);
}

.section-subtitle {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: var(--space-lg);
}

/* ========================================
   SCHEDULE HEADER
======================================== */
.schedule-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    background: var(--white);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-round);
    box-shadow: var(--shadow-soft);
    margin-bottom: var(--space-lg);
    animation: bounceIn 0.6s var(--transition-bounce) 0.2s both;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.header-icon {
    width: 28px;
    height: 28px;
    position: relative;
}

.icon-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--purple-medium) 0%, var(--pink-medium) 100%);
    border-radius: var(--radius-sm);
    transform: rotate(45deg);
    border: 2px solid var(--white);
}

.header-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: 1px;
}

/* ========================================
   SCHEDULE FOOTER
======================================== */
.schedule-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-lg);
    padding: 0 var(--space-sm);
}

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

.social-link {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.5);
    border-radius: var(--radius-circle);
    color: var(--text-medium);
    transition: all var(--transition-bounce);
}

.social-link:hover {
    background: var(--white);
    color: var(--pink-hot);
    transform: translateY(-2px);
}

.social-link .material-icons {
    font-size: 16px;
}

.social-text {
    font-family: var(--font-display);
    font-size: 10px;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 0.5px;
}

.credit {
    font-family: var(--font-display);
    font-size: 10px;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 0.5px;
}

/* ========================================
   SIDE DECORATIONS
======================================== */
.side-decorations {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    overflow: visible;
}

.side-element {
    position: absolute;
    animation: floatElement 6s ease-in-out infinite;
}

.folder-icon {
    width: 40px;
    height: 32px;
    background: var(--purple-light);
    border-radius: 4px 4px var(--radius-sm) var(--radius-sm);
    position: relative;
    border: 2px solid rgba(255,255,255,0.5);
}

.folder-icon::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 4px;
    width: 16px;
    height: 8px;
    background: inherit;
    border-radius: 4px 4px 0 0;
    border: 2px solid rgba(255,255,255,0.5);
    border-bottom: none;
}

.folder-icon.pink {
    background: var(--pink-light);
}

.window-box {
    background: var(--white);
    border: 2px solid var(--purple-light);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    min-width: 60px;
}

.window-text {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 800;
    color: var(--text-dark);
    display: block;
    margin-bottom: var(--space-xs);
}

.window-btn {
    font-family: var(--font-display);
    font-size: 10px;
    font-weight: 700;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    text-align: center;
}

.window-btn.yes {
    background: var(--pink-light);
    color: var(--text-dark);
}

.window-btn.no {
    background: var(--purple-pale);
    color: var(--text-medium);
}

.left-top { left: -50px; top: 15%; animation-delay: 0s; }
.left-bottom { left: -70px; bottom: 25%; animation-delay: 2s; }
.right-top { right: -50px; top: 10%; animation-delay: 1s; }
.right-middle { right: -70px; top: 45%; animation-delay: 3s; }
.right-bottom { right: -50px; bottom: 15%; animation-delay: 1.5s; }

@keyframes floatElement {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-8px) rotate(2deg); }
    75% { transform: translateY(8px) rotate(-2deg); }
}

/* ========================================
   CORNER DIAMONDS
======================================== */
.corner-diamond {
    position: absolute;
    font-size: 20px;
    color: var(--purple-light);
    opacity: 0.6;
    animation: diamondPulse 4s ease-in-out infinite;
}

.corner-diamond.top-left { top: -30px; left: -30px; }
.corner-diamond.top-right { top: -30px; right: -30px; animation-delay: 1s; }
.corner-diamond.bottom-left { bottom: -30px; left: -30px; animation-delay: 2s; }
.corner-diamond.bottom-right { bottom: -30px; right: -30px; animation-delay: 3s; }

@keyframes diamondPulse {
    0%, 100% { opacity: 0.4; transform: rotate(0deg); }
    50% { opacity: 0.8; transform: rotate(180deg); }
}

/* ========================================
   AUTHOR CREDIT
======================================== */
.author-credit {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 750px;
    margin-top: var(--space-lg);
    padding: 0 var(--space-md);
    animation: fadeInUp 0.6s ease 1s both;
}

@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

.author-badge {
    background: var(--white);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-round);
    border: 2px solid var(--purple-light);
}

.author-badge span {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 700;
    color: var(--text-dark);
}

.author-link {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 700;
    color: var(--text-medium);
}

/* ========================================
   THEME TOGGLE
======================================== */
.theme-toggle {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 48px;
    height: 48px;
    background: var(--white);
    border-radius: var(--radius-circle);
    box-shadow: var(--shadow-medium);
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--purple-light);
    overflow: hidden;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-hover);
}

.theme-toggle .material-icons {
    font-size: 24px;
    position: absolute;
    transition: all var(--transition-bounce);
}

.theme-toggle .light-icon {
    color: var(--pink-hot);
    transform: translateY(0);
    opacity: 1;
}

.theme-toggle .dark-icon {
    color: var(--purple-medium);
    transform: translateY(40px);
    opacity: 0;
}

/* ========================================
   LIGHTBOX
======================================== */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 48px;
    height: 48px;
    background: var(--white);
    border-radius: var(--radius-circle);
    color: var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close:hover {
    background: var(--pink-light);
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
}

.lightbox-image {
    width: 100%;
    height: 100%;
    background: var(--purple-pale);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 300px;
    min-height: 300px;
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: var(--white);
    border-radius: var(--radius-circle);
    color: var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-prev { left: var(--space-lg); }
.lightbox-next { right: var(--space-lg); }

.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--pink-light);
}