/* ===========================================
   INTERLINK GO - Main Styles
   webOS TV App
   =========================================== */

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

/* ===== Base ===== */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow: hidden;
    width: 100%;
    min-height: 100vh;
}

/* ===== App Layout ===== */
#app {
    display: flex;
    width: 100%;
    height: 100vh;
}

#main-content {
    flex: 1;
    margin-left: var(--nav-width);
    padding: var(--spacing-lg);
    overflow-y: auto;
    overflow-x: hidden;
    height: 100%;
}

#main-content.nav-collapsed {
    margin-left: var(--nav-width-collapsed);
}

#main-content.nav-hidden {
    margin-left: 0;
}

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

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ===== Typography ===== */
h1 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-sm);
}

p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* ===== Links ===== */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover, a:focus {
    color: var(--color-primary-hover);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    border: none;
    border-radius: var(--button-border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-primary);
}

.btn-primary:hover,
.btn-primary.focused {
    background-color: var(--color-primary-hover);
}

.btn-secondary {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.btn-secondary:hover,
.btn-secondary.focused {
    background-color: var(--color-text-muted);
}

/* ===== Focus States (Web) ===== */
.focusable {
    outline: none;
    transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.focusable:focus-visible,
.focusable.focused {
    box-shadow: var(--shadow-focus);
}

.focusable:focus:not(:focus-visible) {
    box-shadow: none;
}

/* ===== Utility Classes ===== */
.hidden {
    display: none !important;
}

.invisible {
    visibility: hidden;
}

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

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

.flex {
    display: flex;
}

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

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

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

/* ===== Loading Spinner ===== */
#loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-overlay);
    z-index: var(--z-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--color-bg-tertiary);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== Toast Notifications ===== */
#toast-container {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-bg-card);
    border-radius: var(--card-border-radius);
    box-shadow: var(--shadow-lg);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    animation: slideIn var(--transition-normal) ease;
}

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

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

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

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ===== Section Headers ===== */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.section-action {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ===== Horizontal Lists ===== */
.horizontal-list {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    padding: var(--spacing-sm) 0;
    scroll-behavior: smooth;
}

.horizontal-list::-webkit-scrollbar {
    display: none;
}

/* ===== Grid Layout ===== */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-channels {
    grid-template-columns: repeat(auto-fill, minmax(var(--card-channel-width), 1fr));
}

.grid-movies {
    grid-template-columns: repeat(auto-fill, minmax(var(--card-movie-width), 1fr));
}

/* ===== Empty State ===== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 400px;
    text-align: center;
}

.empty-state-icon {
    width: 74px;
    height: 74px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-md);
}

.empty-state-icon-svg {
    width: 36px;
    height: 36px;
    fill: currentColor;
}

.empty-state-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.empty-state-description {
    color: var(--color-text-muted);
    max-width: 400px;
}

/* ===== Page Transitions ===== */
#main-content {
    animation: pageEnter var(--transition-normal) ease-out;
}

@media (max-width: 1024px) {
    #app {
        flex-direction: column;
        height: 100vh;
    }

    #main-content {
        margin-left: 0;
        padding: var(--spacing-md);
        height: auto;
        min-height: 0;
    }
}

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

.page-exit {
    animation: pageExit var(--transition-fast) ease-in forwards;
}

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

/* Modal animation */
.movie-detail-modal {
    animation: fadeIn var(--transition-fast) ease-out;
}

.movie-detail-modal .movie-detail {
    animation: modalSlideIn var(--transition-normal) ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(30px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Card hover animations */
.channel-card,
.movie-card {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.channel-card:hover,
.channel-card.focused,
.movie-card:hover,
.movie-card.focused {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* Stagger animation for grid items */
.tv-grid .channel-card,
.movies-grid .movie-card {
    animation: cardFadeIn var(--transition-normal) ease-out backwards;
}

.tv-grid .channel-card:nth-child(1), .movies-grid .movie-card:nth-child(1) { animation-delay: 0ms; }
.tv-grid .channel-card:nth-child(2), .movies-grid .movie-card:nth-child(2) { animation-delay: 30ms; }
.tv-grid .channel-card:nth-child(3), .movies-grid .movie-card:nth-child(3) { animation-delay: 60ms; }
.tv-grid .channel-card:nth-child(4), .movies-grid .movie-card:nth-child(4) { animation-delay: 90ms; }
.tv-grid .channel-card:nth-child(5), .movies-grid .movie-card:nth-child(5) { animation-delay: 120ms; }
.tv-grid .channel-card:nth-child(6), .movies-grid .movie-card:nth-child(6) { animation-delay: 150ms; }
.tv-grid .channel-card:nth-child(7), .movies-grid .movie-card:nth-child(7) { animation-delay: 180ms; }
.tv-grid .channel-card:nth-child(8), .movies-grid .movie-card:nth-child(8) { animation-delay: 210ms; }
.tv-grid .channel-card:nth-child(9), .movies-grid .movie-card:nth-child(9) { animation-delay: 240ms; }
.tv-grid .channel-card:nth-child(10), .movies-grid .movie-card:nth-child(10) { animation-delay: 270ms; }
.tv-grid .channel-card:nth-child(11), .movies-grid .movie-card:nth-child(11) { animation-delay: 300ms; }
.tv-grid .channel-card:nth-child(12), .movies-grid .movie-card:nth-child(12) { animation-delay: 330ms; }

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