:root {
    /* --- Functional Theme Variables - Light Mode --- */
    --surface-main: #f8f9fa;
    --surface-card: rgba(255, 252, 252, 0.35);
    --surface-card-hover: rgba(255, 255, 255, 0.55);
    --surface-modal: rgba(255, 255, 255, 0.55);
    --surface-header: rgba(255, 255, 255, 0.30);
    
    --text-primary: #1a1a1a;
    --text-secondary: rgba(0, 0, 0, 0.6);
    --text-inverse: #ffffff;
    
    --border-subtle: rgba(255, 255, 255, 0.55);
    --border-strong: rgba(0, 0, 0, 0.18);
    --border-navbar: #eaeaea;
    
    --input-bg: rgba(165, 130, 120, 0.15);
    --input-bg-focus: rgba(165, 130, 120, 0.25);
    
    --accent-primary: rgba(71, 92, 103, 0.75);
    --accent-primary-hover: rgba(40, 52, 59, 0.9);
    --accent-warning: rgba(205, 140, 55, 0.85);
    --accent-warning-hover: rgba(205, 140, 55, 1);

    --shadow-main: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
    --blur-main: blur(12px);
    --blur-modal: blur(20px);

    /* Map to legacy variables for compatibility during transition if needed */
    --bg-color: var(--surface-main);
    --text-color: var(--text-primary);
    --glass-bg: var(--surface-card);
    --glass-bg-hover: var(--surface-card-hover);
    --glass-border: var(--border-subtle);
    --glass-shadow: var(--shadow-main);
    --glass-blur: var(--blur-main);
    --glass-modal-bg: var(--surface-modal);
    --glass-modal-blur: var(--blur-modal);
    --glass-input-bg: var(--input-bg);
    --glass-input-bg-focus: var(--input-bg-focus);
    --glass-input-border: var(--border-strong);
    --glass-text: var(--text-primary);
    --glass-text-muted: var(--text-secondary);
    --btn-primary-glass: var(--accent-primary);
    --btn-primary-glass-hover: var(--accent-primary-hover);
    --btn-warning-glass: var(--accent-warning);
    --btn-warning-glass-hover: var(--accent-warning-hover);
    --glass-header-bg: var(--surface-header);
    --navbar-border: var(--border-navbar);
}

/* Dark Mode Overrides */
[data-theme="dark"] {
    --surface-main: #0b0b0e;
    --surface-card: rgba(45, 45, 60, 0.75);
    --surface-card-hover: rgba(60, 60, 80, 0.9);
    --surface-modal: rgba(35, 35, 50, 0.92);
    --surface-header: rgba(15, 15, 25, 0.60);

    --text-primary: #f0f0f0;
    --text-secondary: rgba(255, 255, 255, 0.75);
    --text-inverse: #ffffff;

    --border-subtle: rgba(255, 255, 255, 0.25);
    --border-strong: rgba(255, 255, 255, 0.35);
    --border-navbar: rgba(255, 255, 255, 0.2);

    --input-bg: rgba(255, 255, 255, 0.12);
    --input-bg-focus: rgba(255, 255, 255, 0.2);

    --shadow-main: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    
    /* Bootstrap 5.3 Overrides */
    --bs-body-bg: var(--surface-main);
    --bs-body-color: var(--text-primary);
    --bs-tertiary-bg: var(--surface-card);
}

/* ── Specific Overrides Clean Up ── */
/* We keep some specific overrides but point them to functional variables */
[data-theme="dark"] .recent-label,
[data-theme="dark"] .section-label,
[data-theme="dark"] .ph-sub,
[data-theme="dark"] .sb-sub,
[data-theme="dark"] .sb-section-label,
[data-theme="dark"] .rc-select-letter-text,
[data-theme="dark"] [data-i18n="rc_select_letter"] {
    color: var(--text-inverse) !important;
}

[data-theme="dark"] .glass-input::placeholder {
    color: rgba(255, 255, 255, 0.8) !important;
}

[data-theme="dark"] .text-dark,
[data-theme="dark"] .text-secondary,
[data-theme="dark"] .text-muted {
    color: var(--text-primary) !important;
}

.rc-select-letter-text {
    color: var(--glass-text-muted, rgba(0,0,0,0.5));
}

.glass-input::placeholder,
.glass-input::-webkit-input-placeholder,
.glass-input::-moz-placeholder,
.glass-input:-ms-input-placeholder {
    color: rgba(0, 0, 0, 0.4);
}

body {
    transition: background-color 0.3s, color 0.3s;
}

/* ── Common Glass Classes ── */

.glass-card {
    background: var(--surface-card) !important;
    backdrop-filter: var(--blur-main) !important;
    -webkit-backdrop-filter: var(--blur-main) !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: 20px !important;
    box-shadow: var(--shadow-main) !important;
    color: var(--text-primary) !important;
}

.glass-header {
    background: var(--surface-header) !important;
    backdrop-filter: blur(10px) !important;
    border-bottom: 1px solid var(--border-subtle) !important;
    border-top-left-radius: 20px !important;
    border-top-right-radius: 20px !important;
    color: var(--text-primary) !important;
}

.glass-modal .modal-content {
    background: var(--surface-modal) !important;
    backdrop-filter: var(--blur-modal) !important;
    -webkit-backdrop-filter: var(--blur-modal) !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: 20px !important;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12) !important;
    color: var(--text-primary) !important;
}

.glass-input {
    background: var(--input-bg) !important;
    border: 1px solid var(--border-strong) !important;
    border-radius: 10px !important;
    padding: 0.4rem 0.6rem !important;
    color: var(--text-primary) !important;
    transition: all 0.3s ease;
}

.glass-input:focus {
    background: var(--input-bg-focus) !important;
    box-shadow: 0 0 0 0.2rem rgba(0, 0, 0, 0.06) !important;
    border-color: rgba(0, 0, 0, 0.45) !important;
    outline: none;
}

/* Glass Buttons */
.btn-glass {
    border-radius: 999px !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
    border: 1px solid transparent !important;
}

.btn-glass-primary {
    background: var(--accent-primary) !important;
    color: var(--text-inverse) !important;
    border-color: var(--accent-primary) !important;
}

.btn-glass-primary:hover {
    background: var(--accent-primary-hover) !important;
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.18);
}