/* BASE & VARIABLES */
:root {
    /* Määritellyt brändivärit */
    --color-deep-blue: #000a8c;
    --color-light-teal: #6ec8d2;
    --color-teal: #0096aa;
    --color-peach: #FFB4AA;
    --color-magenta: #d70f64;
    --color-mint: #47D7AC;
    --color-green: #00AF66;

    /* Light Theme Defaults */
    --bg-main: #f0f4f8;
    --bg-gradient: linear-gradient(135deg, #f0f4f8 0%, #e0e8f0 100%);
    --card-bg: rgba(255, 255, 255, 0.65);
    --card-border: rgba(255, 255, 255, 0.8);
    --text-primary: var(--color-deep-blue);
    --text-secondary: var(--color-teal);
    
    --input-bg: rgba(255, 255, 255, 0.8);
    --input-border: rgba(0, 150, 170, 0.2);
    --input-focus: var(--color-magenta);
    
    --btn-primary-bg: linear-gradient(135deg, var(--color-teal), var(--color-light-teal));
    --btn-primary-text: #ffffff;
    --btn-primary-shadow: rgba(0, 150, 170, 0.3);
    
    --btn-secondary-bg: rgba(255, 255, 255, 0.5);
    --btn-secondary-text: var(--color-deep-blue);
    
    --shadow-soft: 0 8px 32px rgba(0, 10, 140, 0.08);
    --shadow-hover: 0 12px 40px rgba(0, 10, 140, 0.12);
}

[data-theme="dark"] {
    --bg-main: var(--color-deep-blue);
    --bg-gradient: radial-gradient(circle at top right, #001550, var(--color-deep-blue));
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: var(--color-light-teal);
    
    --input-bg: rgba(0, 0, 0, 0.2);
    --input-border: rgba(110, 200, 210, 0.2);
    --input-focus: var(--color-mint);
    
    --btn-primary-bg: linear-gradient(135deg, var(--color-magenta), var(--color-peach));
    --btn-primary-text: #ffffff;
    --btn-primary-shadow: rgba(215, 15, 100, 0.4);
    
    --btn-secondary-bg: rgba(255, 255, 255, 0.1);
    --btn-secondary-text: var(--color-light-teal);
    
    --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
}

/* TYPOGRAPHY */
/* Varela Round for Headings/Buttons, Open Sans/Roboto for Body */
/* Nämä ladataan lokaalisti, tai selaimen oletuksena jos ei asennettu. Ei CDN-linkkejä! */
@font-face {
    font-family: 'Varela Round';
    src: local('Varela Round'), local('VarelaRound-Regular');
    font-weight: 400;
}
@font-face {
    font-family: 'Open Sans';
    src: local('Open Sans'), local('OpenSans-Regular');
    font-weight: 400;
}

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

body {
    font-family: 'Open Sans', 'Roboto', 'Segoe UI', sans-serif;
    background: var(--bg-main);
    background-image: var(--bg-gradient);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, .font-display {
    font-family: 'Varela Round', 'Quicksand', sans-serif;
    font-weight: normal;
    color: var(--text-primary);
}

/* LAYOUT */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* GLASSMORPHISM CARDS */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 24px;
    box-shadow: var(--shadow-soft);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-hover);
}

/* HEADER & NAV */
.site-header {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-soft);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    font-family: 'Varela Round', sans-serif;
    font-size: 24px;
    font-weight: bold;
    color: var(--color-magenta);
    text-decoration: none;
    letter-spacing: 1px;
}

[data-theme="dark"] .nav-logo {
    color: var(--color-mint);
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: 'Varela Round', sans-serif;
    font-size: 15px;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    font-family: 'Varela Round', sans-serif;
    font-size: 15px;
    padding: 12px 24px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 4px 15px var(--btn-primary-shadow);
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--btn-primary-shadow);
}

.btn:active {
    transform: translateY(1px);
}

.btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    box-shadow: none;
    border: 1px solid var(--card-border);
}

.btn-secondary:hover {
    background: var(--card-border);
    box-shadow: var(--shadow-soft);
}

/* STYLISH FORMS */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-family: 'Varela Round', sans-serif;
    font-size: 14px;
    color: var(--text-secondary);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="datetime-local"],
textarea {
    width: 100%;
    padding: 16px 20px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: 'Open Sans', 'Roboto', sans-serif;
    font-size: 15px;
    transition: all 0.3s ease;
    backdrop-filter: blur(8px);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(215, 15, 100, 0.2);
    background: var(--card-bg);
}

[data-theme="dark"] input:focus, [data-theme="dark"] textarea:focus {
    box-shadow: 0 0 0 3px rgba(71, 215, 172, 0.2);
}

/* ALERTS */
.alert {
    padding: 16px 24px;
    border-radius: 12px;
    margin-bottom: 24px;
    background: rgba(71, 215, 172, 0.1);
    border: 1px solid var(--color-mint);
    color: var(--color-green);
    font-family: 'Open Sans', sans-serif;
}

.alert.error {
    background: rgba(215, 15, 100, 0.1);
    border-color: var(--color-magenta);
    color: var(--color-magenta);
}

/* VIDEO GRID & CARDS */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.video-card-inner {
    overflow: hidden;
    border-radius: 12px;
    position: relative;
    aspect-ratio: 16/9;
    background: rgba(0,0,0,0.1);
    margin-bottom: 16px;
}

.video-card-inner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .video-card-inner img {
    transform: scale(1.05);
}

/* THEME TOGGLE */
#theme-toggle {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
}

#theme-toggle:hover {
    background: var(--card-border);
}

/* CUSTOM SCROLLBAR */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--card-border);
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}
 
 /* Mobile Menu & Layout */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 5px;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 15px;
        padding: 20px 0;
    }
    .nav-links.active {
        display: flex;
    }
    .nav-container {
        flex-wrap: wrap;
    }
    .mobile-menu-btn {
        display: block;
    }
    
    /* Layout */
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    .video-grid {
        grid-template-columns: 1fr !important;
    }
    .card {
        padding: 15px !important;
    }
    
    /* Admin specific */
    #bulk-action-bar {
        flex-direction: column;
        bottom: -200px !important;
        border-radius: 15px !important;
    }
    #bulk-action-bar.show {
        bottom: 10px !important;
    }
    .admin-container {
        padding-top: 20px !important;
    }
}