@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Base spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* 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);
    
    /* Layout */
    --navbar-height: 64px;
    --border-radius: 12px;
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-color: #f9f9f9;
    --surface-color: #ffffff;
    --surface-alt: #f0f0f0;
    --text-primary: #0f0f0f;
    --text-secondary: #606060;
    --accent-color: #ff0000;
    --accent-hover: #cc0000;
    --border-color: #e5e5e5;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --overlay-bg: rgba(255, 255, 255, 0.8);
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --bg-color: #0f0f0f;
    --surface-color: #1e1e1e;
    --surface-alt: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #aaaaaa;
    --accent-color: #ff4e4e;
    --accent-hover: #ff7070;
    --border-color: #333333;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.5), 0 2px 4px -1px rgba(0,0,0,0.3);
    --overlay-bg: rgba(15, 15, 15, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Navbar */
.navbar {
    height: var(--navbar-height);
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-brand-sub {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-secondary);
    align-self: flex-end;
    margin-bottom: 0.3rem;
}

@media (max-width: 480px) {
    .navbar-brand-sub { display: none; }
}

/* Phones: the user's name crowded into the logo ("SeenlogDemo") - the
   Logout button is enough there. */
.navbar-user {
    margin-left: var(--spacing-sm);
}

@media (max-width: 600px) {
    .navbar-user {
        display: none;
    }
}

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

/* Buttons */
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    font-size: 0.9rem;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--surface-alt);
    border-color: var(--text-secondary);
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background-color: var(--surface-alt);
    color: var(--text-primary);
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
}

/* Theme Toggle */
.theme-toggle {
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    padding: var(--spacing-sm);
    border-radius: 50%;
    transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--surface-alt);
}

/* Cards */
.card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

/* Inputs */
.form-input {
    width: 100%;
    padding: 0.8rem 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    border-color: var(--accent-color);
}

/* Layout Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

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

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 768px) {
    .grid-cols-2, .grid-cols-3 { grid-template-columns: 1fr; }
}

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

.animate-fade-in {
    animation: fadeIn var(--transition-normal) forwards;
}

/* Utils */
.text-secondary { color: var(--text-secondary); }

.site-footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.site-footer p { margin: var(--spacing-xs) 0; }
.site-footer a { color: inherit; }

.legal { max-width: 760px; margin: 0 auto; padding: var(--spacing-xl); line-height: 1.6; }
@media (max-width: 480px) { .legal { padding: var(--spacing-md); } }
.legal h1 { margin-bottom: var(--spacing-xs); }
.legal h2 { font-size: 1.15rem; margin: var(--spacing-lg) 0 var(--spacing-sm); }
.legal ul { padding-left: 1.25rem; }
.legal li { margin-bottom: var(--spacing-xs); }
.legal a { color: var(--accent-color); }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}

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

/* Watched State */
.watched {
    opacity: 0.6;
    filter: grayscale(0.5);
}

.watched-label {
    background: var(--accent-color);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 700;
}