/* Base styles from original file */
body {
    font-family: 'Manrope', 'Noto Sans', sans-serif;
    color: #e2e8f0;
    /* Default background is set by themes */
    transition: background-color 0.8s ease, color 0.8s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto Slab', serif;
}

.font-roboto-slab {
    font-family: 'Roboto Slab', serif;
}

.main-content {
    padding-top: 125px; /* Adjusted height of the fixed header */
}

/* --- THEME DEFINITIONS --- */

/* Theme Properties:
   --bg-primary: Main page background
   --bg-secondary: Cards, secondary panels, header background
   --text-primary: Main text color
   --text-secondary: Subdued text, descriptions
   --accent-primary: Main brand/action color
   --accent-secondary: Secondary highlight/hover color
   --border-color: Border for cards and panels
   --hero-image: Background for the hero section
   --hero-overlay: Gradient overlay for hero text legibility
*/

/* Default Theme (Fallback) */
:root {
    --bg-primary: #101a23;
    --bg-secondary: #16222d;
    --text-primary: #e2e8f0;
    --text-secondary: #90adcb;
    --accent-primary: #0c7ff2;
    --accent-secondary: #3b82f6;
    --border-color: #334155;
    --hero-image: url("https://placehold.co/1920x1080/101a23/e2e8f0?text=HRHelp");
    --hero-overlay: linear-gradient(rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.5) 100%);
}

/* Theme 1: Dawn (04:00 - 07:59) - Rich Visual */
.theme-dawn {
    --bg-primary: #2c233a;
    --bg-secondary: #3e3252;
    --text-primary: #f3e8ff;
    --text-secondary: #d9c7e8;
    --accent-primary: #f9a826;
    --accent-secondary: #fbbf24;
    --border-color: #5a4b70;
    --hero-image: url("https://placehold.co/1920x1080/4c3b69/f3e8ff?text=Dawn+Over+Highveld");
    --hero-overlay: linear-gradient(45deg, rgba(44, 35, 58, 0.7), rgba(107, 70, 128, 0.6));
}

/* Theme 2: Savanna (08:00 - 11:59) - Earthy */
.theme-savanna {
    --bg-primary: #fdfbf6;
    --bg-secondary: #ffffff;
    --text-primary: #4d453b;
    --text-secondary: #8a7a69;
    --accent-primary: #b45309;
    --accent-secondary: #d97706;
    --border-color: #e7e5e4;
    --hero-image: url("https://placehold.co/1920x1080/fdfbf6/4d453b?text=Sunlit+Savanna");
    --hero-overlay: linear-gradient(rgba(255, 255, 255, 0.1) 0%, rgba(245, 235, 220, 0.3) 100%);
}

/* Theme 3: Karoo (12:00 - 15:59) - Earthy */
.theme-karoo {
    --bg-primary: #fafaf9;
    --bg-secondary: #ffffff;
    --text-primary: #57534e;
    --text-secondary: #78716c;
    --accent-primary: #84cc16; /* lime-500 */
    --accent-secondary: #a3e635; /* lime-400 */
    --border-color: #d6d3d1;
    --hero-image: url("https://placehold.co/1920x1080/d6d3d1/57534e?text=Karoo+Midday");
    --hero-overlay: linear-gradient(rgba(255, 255, 255, 0) 0%, rgba(230, 230, 225, 0.2) 100%);
}

/* Theme 4: Sunset (16:00 - 19:59) - Rich Visual */
.theme-sunset {
    --bg-primary: #4c1d24;
    --bg-secondary: #6b2831;
    --text-primary: #fee2e2;
    --text-secondary: #fecaca;
    --accent-primary: #f97316;
    --accent-secondary: #fb923c;
    --border-color: #883945;
    --hero-image: url("https://placehold.co/1920x1080/6b2831/fee2e2?text=Drakensberg+Sunset");
    --hero-overlay: linear-gradient(45deg, rgba(76, 29, 36, 0.7), rgba(159, 46, 62, 0.6));
}

/* Theme 5: Midnight (20:00 - 23:59) - Rich Visual */
.theme-midnight {
    --bg-primary: #101a23; /* Original Dark Blue */
    --bg-secondary: #16222d;
    --text-primary: #e2e8f0;
    --text-secondary: #90adcb;
    --accent-primary: #0c7ff2;
    --accent-secondary: #3b82f6;
    --border-color: #334155;
    --hero-image: url("https://placehold.co/1920x1080/101a23/90adcb?text=Joburg+Night+Sky");
    --hero-overlay: linear-gradient(rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.5) 100%);
}

/* Theme 6: Earth Dark (00:00 - 03:59) - Earthy */
.theme-earth-dark {
    --bg-primary: #262422;
    --bg-secondary: #3a3633;
    --text-primary: #d6d3d1;
    --text-secondary: #a8a29e;
    --accent-primary: #a16207;
    --accent-secondary: #ca8a04;
    --border-color: #57534e;
    --hero-image: url("https://placehold.co/1920x1080/262422/d6d3d1?text=Transkei+Under+The+Stars");
    --hero-overlay: linear-gradient(rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.7) 100%);
}


/* --- APPLYING THEME VARIABLES --- */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.accent-primary { background-color: var(--accent-primary); }
.accent-primary-text { color: var(--accent-primary); }
.border-themed { border-color: var(--border-color); }

.hero-section-bg {
    background-image: var(--hero-overlay), var(--hero-image);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: background-image 0.8s ease;
}

.module-card {
    background-color: var(--bg-secondary);
    transition: background-color 0.3s ease;
}
.module-card:hover {
    background-color: color-mix(in srgb, var(--bg-secondary) 85%, #fff 15%);
}

.option-card {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    transition: all 0.3s ease;
}
.option-card:hover {
    transform: translateY(-5px);
    background-color: color-mix(in srgb, var(--bg-secondary) 85%, #fff 15%);
    border-color: var(--accent-primary);
}

.text-box {
    background-color: color-mix(in srgb, var(--bg-secondary) 80%, transparent);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
}

/* --- NEW HEADER BUTTON STYLES --- */
.nav-button {
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-secondary);
    background-color: transparent;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.nav-button:hover {
    color: var(--text-primary);
    background-color: color-mix(in srgb, var(--bg-secondary) 70%, #fff 30%);
}

.nav-link-active {
    color: #ffffff !important;
    background-color: var(--accent-primary) !important;
    border-color: var(--accent-secondary);
}