/* ========================================================
   DIGILIPI 4-Theme Color System (Bright, Reading, Dark, Colour)
   ======================================================== */

:root, [data-theme="bright"] {
    --bg-main: #F8FAFC;
    --bg-surface: #FFFFFF;
    --bg-drawer: #FFFFFF;
    --border-color: #E2E8F0;
    --text-primary: #0A1931;
    --text-secondary: #5A6B82;
    --primary-color: #0094A8; /* Logo Teal */
    --accent-gold: #F5A623;   /* Logo Golden Amber */
    --hover-bg: #EDF7F9;
    --card-shadow: 0 4px 15px rgba(0, 148, 168, 0.08);
}

[data-theme="reading"] {
    --bg-main: #FBF0D9;      /* Kindle Sepia Tint */
    --bg-surface: #F3E5C8;
    --bg-drawer: #F7E9CE;
    --border-color: #E2D3B3;
    --text-primary: #3D2E1E; /* Easy-on-eye Dark Brown */
    --text-secondary: #705843;
    --primary-color: #B87333;
    --accent-gold: #D48806;
    --hover-bg: #EBD9B5;
    --card-shadow: 0 4px 15px rgba(61, 46, 30, 0.06);
}

[data-theme="dark"] {
    --bg-main: #070F1E;      /* OLED Midnight */
    --bg-surface: #0F1D36;
    --bg-drawer: #0B162C;
    --border-color: #1E2D4A;
    --text-primary: #E2E8F0;
    --text-secondary: #8FA3BF;
    --primary-color: #00C2CB;
    --accent-gold: #F5A623;
    --hover-bg: #14284B;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

[data-theme="colour"] {
    --bg-main: #091B38;      /* Deep Navy (from logo book left) */
    --bg-surface: #0F2C59;
    --bg-drawer: #07162E;
    --border-color: #17427E;
    --text-primary: #FFFFFF;
    --text-secondary: #F7C978;
    --primary-color: #0094A8; /* Vibrant Teal */
    --accent-gold: #F5A623;   /* Brand Gold */
    --hover-bg: #153C78;
    --card-shadow: 0 6px 25px rgba(0, 148, 168, 0.25);
}