/* ===========================================
   Base — CSS Variables, Element Resets, Typography
   Everything else depends on these variables.
   =========================================== */

/* LichtgitterUSA Dark Theme Variables */
:root {
    /* Depth layers - darkest to lightest */
    --bg-recessed: #0a0a0a;       /* Sidebar - deepest */
    --bg-primary: #121212;         /* Page background */
    --bg-surface: #1a1a1a;         /* Cards - elevated */
    --bg-surface-hover: #252525;
    --bg-elevated: #222222;        /* Modals - floating */

    /* Text */
    --text-primary: #e0e0e0;
    --text-secondary: #b8b8b8;

    /* Accent */
    --accent: #FC2308;
    --accent-hover: #ff4d3a;
    --accent-light: rgba(252, 35, 8, 0.15);

    /* Status */
    --success: #4caf50;
    --success-light: rgba(76, 175, 80, 0.15);
    --inactive: #6c757d;
    --warning: #ffc107;
    --warning-light: rgba(255, 193, 7, 0.15);

    /* Borders */
    --border-color: #333;
    --border-subtle: rgba(255, 255, 255, 0.05);

    /* Shadows for depth */
    --shadow-inset: inset 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-modal: 0 8px 32px rgba(0, 0, 0, 0.5);

    /* Typography */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

/* Base Elements */
html, body {
    margin: 0;
    padding: 0;
    font-family: 'Montserrat', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
}

h1:focus {
    outline: none;
}

a, .btn-link {
    color: var(--accent);
}

a:hover, .btn-link:hover {
    color: var(--accent-hover);
}

code {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    background-color: rgba(0, 0, 0, 0.3);
    padding: 0.2rem 0.4rem;
    border-radius: 2px;
    letter-spacing: 0.5px;
    font-size: 0.85em;
}

/* Button Overrides */
.btn-primary {
    color: #fff;
    background-color: var(--accent);
    border-color: var(--accent);
}

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

.btn-outline-danger {
    color: var(--accent);
    border-color: var(--accent);
}

.btn-outline-danger:hover {
    background-color: var(--accent);
    color: #fff;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem var(--bg-primary), 0 0 0 0.25rem var(--accent);
}

/* Form Styles */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid var(--success);
}

.invalid {
    outline: 1px solid var(--accent);
}

.validation-message {
    color: var(--accent);
}

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--text-secondary);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}