/* ========================================
   TSDS Theme - Lokale Schriftarten (DSGVO)
   Fonts werden lokal gehostet statt von Google CDN.
   ======================================== */

/* Inter - Primäre Schriftart */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/inter-v18-latin-regular.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../fonts/inter-v18-latin-500.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../fonts/inter-v18-latin-600.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('../fonts/inter-v18-latin-700.woff2') format('woff2');
}

/* JetBrains Mono - Monospace Schriftart */
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/jetbrains-mono-v18-latin-regular.woff2') format('woff2');
}

@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../fonts/jetbrains-mono-v18-latin-500.woff2') format('woff2');
}

/* ========================================
   TSDS Theme - Dark Theme Variables
   ======================================== */

:root {
    /* Hintergrund-Farben */
    --color-tsds-bg-primary: #0a0a0f;
    --color-tsds-bg-secondary: #12121a;
    --color-tsds-bg-tertiary: #1a1a24;
    --color-tsds-bg-elevated: #22222e;

    /* Text-Farben */
    --color-tsds-text-primary: #e8e8ed;
    --color-tsds-text-secondary: #a0a0b0;
    --color-tsds-text-muted: #6a6a7a;

    /* Akzent-Farben (Coral) */
    --color-tsds-accent: #ff6b4a;
    --color-tsds-accent-light: #ff8a70;
    --color-tsds-accent-dark: #e55a3a;

    /* Status-Farben */
    --color-success: #4ade80;
    --color-success-dark: #22c55e;
    --color-warning: #fbbf24;
    --color-warning-dark: #f59e0b;
    --color-error: #f87171;
    --color-error-dark: #ef4444;
    --color-info: #60a5fa;
    --color-info-dark: #3b82f6;

    /* Border & Shadow */
    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-hover: rgba(255, 255, 255, 0.2);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);

    /* Schriftarten */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Zusätzliche Farben */
    --color-on-accent: #ffffff;          /* Text auf Akzent-Hintergrund */
    --color-meet: #00897b;               /* Google Meet Grün */
    --color-meet-dark: #00695c;          /* Google Meet Grün dunkel */
    --color-meet-darker: #004d40;        /* Google Meet Grün am dunkelsten */
    --color-danger: #dc2626;             /* Danger/Delete Rot */
    --color-danger-dark: #b91c1c;        /* Danger Hover */

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
}

/* ========================================
   Base Styles
   ======================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-tsds-bg-primary);
    color: var(--color-tsds-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========================================
   Layout Components
   ======================================== */

.site-header {
    background-color: var(--color-tsds-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-nav {
    padding: var(--spacing-md) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-link {
    font-size: 0.875rem;
    color: var(--color-tsds-text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.nav-link:hover {
    color: var(--color-tsds-accent);
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-tsds-text-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.site-logo:hover {
    color: var(--color-tsds-accent);
}

.logo-text {
    letter-spacing: -0.02em;
}

.logo-separator {
    color: var(--color-tsds-text-muted);
}

.logo-subtitle {
    color: var(--color-tsds-text-secondary);
    font-weight: 500;
    font-size: 1rem;
}

.site-main {
    flex: 1;
    padding: var(--spacing-2xl) 0;
}

.site-footer {
    background-color: var(--color-tsds-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
}

.footer-text {
    color: var(--color-tsds-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.footer-link {
    color: var(--color-tsds-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-base);
}

.footer-link:hover {
    color: var(--color-tsds-accent);
}

.footer-separator {
    color: var(--color-tsds-text-muted);
    font-size: 0.875rem;
}

/* ========================================
   Utility Classes
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Skip-Link für Barrierefreiheit */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-tsds-accent);
    color: var(--color-on-accent);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 100;
    transition: top 0.2s;
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    top: 0;
}

.text-primary {
    color: var(--color-tsds-text-primary);
}

.text-secondary {
    color: var(--color-tsds-text-secondary);
}

.text-muted {
    color: var(--color-tsds-text-muted);
}

.text-accent {
    color: var(--color-tsds-accent);
}

.text-center {
    text-align: center;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* ========================================
   Basis-Komponenten
   Gemeinsame Grundlage für alle Seiten.
   Seitenspezifische Overrides in booking.css,
   admin.css bzw. admin-auth.css.
   ======================================== */

/* --- Buttons --- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-tsds-accent);
    color: var(--color-on-accent);
}

.btn-secondary {
    background-color: var(--color-tsds-bg-elevated);
    color: var(--color-tsds-text-primary);
    border: 1px solid var(--color-border);
}

.btn-danger {
    background-color: var(--color-error);
    color: var(--color-on-accent);
}

/* --- Formulare --- */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-tsds-text-primary);
    margin-bottom: var(--spacing-sm);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-tsds-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-tsds-text-primary);
    font-size: 0.875rem;
    font-family: var(--font-primary);
    transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-tsds-accent);
    box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-tsds-text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}