/*
Theme Name: WBS Starter
Theme URI: https://www.weiss-system.de/
Author: WMI Group
Author URI: https://www.wmi-group.net/
Description: Eigenes WordPress-Theme fuer WBS Terminbuchung SaaS. Multi-Tenant-faehig mit Branchen-CI Support. Basis fuer Child-Themes.
Version: 1.1.0
Requires at least: 6.0
Requires PHP: 8.1
License: Proprietary
License URI: https://www.weiss-system.de/agb/
Text Domain: wbs-starter
Tags: booking, appointment, multi-tenant, saas, healthcare

WBS Terminbuchung — 3 Schritte zum Termin.
*/

/* ===== CSS Custom Properties (Design Tokens) ===== */
:root {
    /* Primaerfarben — werden per Tenant/Child-Theme ueberschrieben */
    --wbs-primary: #2563eb;
    --wbs-primary-dark: #1d4ed8;
    --wbs-primary-light: #3b82f6;
    --wbs-primary-subtle: #eff6ff;
    --wbs-primary-rgb: 37, 99, 235;

    /* Sekundaerfarben */
    --wbs-secondary: #059669;
    --wbs-secondary-dark: #047857;
    --wbs-secondary-light: #10b981;

    /* Akzent / CTA */
    --wbs-accent: #f59e0b;
    --wbs-accent-dark: #d97706;

    /* Neutralfarben */
    --wbs-text: #1f2937;
    --wbs-text-muted: #6b7280;
    --wbs-text-light: #9ca3af;
    --wbs-bg: #f9fafb;
    --wbs-bg-white: #ffffff;
    --wbs-bg-alt: #f3f4f6;
    --wbs-border: #e5e7eb;
    --wbs-border-light: #f3f4f6;

    /* Status */
    --wbs-success: #059669;
    --wbs-warning: #f59e0b;
    --wbs-error: #dc2626;
    --wbs-info: #2563eb;

    /* Typografie */
    --wbs-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --wbs-font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
    --wbs-font-size-xs: 0.75rem;
    --wbs-font-size-sm: 0.875rem;
    --wbs-font-size-base: 1rem;
    --wbs-font-size-lg: 1.125rem;
    --wbs-font-size-xl: 1.25rem;
    --wbs-font-size-2xl: 1.5rem;
    --wbs-font-size-3xl: 1.875rem;
    --wbs-font-size-4xl: 2.25rem;
    --wbs-line-height: 1.6;

    /* Abstande */
    --wbs-space-xs: 0.25rem;
    --wbs-space-sm: 0.5rem;
    --wbs-space-md: 1rem;
    --wbs-space-lg: 1.5rem;
    --wbs-space-xl: 2rem;
    --wbs-space-2xl: 3rem;
    --wbs-space-3xl: 4rem;

    /* Radien */
    --wbs-radius-sm: 4px;
    --wbs-radius: 8px;
    --wbs-radius-lg: 12px;
    --wbs-radius-xl: 16px;
    --wbs-radius-full: 9999px;

    /* Schatten */
    --wbs-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --wbs-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    --wbs-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
    --wbs-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);

    /* Layout */
    --wbs-max-width: 1200px;
    --wbs-header-height: 64px;
    --wbs-sidebar-width: 280px;
    --wbs-transition: 0.2s ease;
}

/* ===== Skip-Link (Barrierefreiheit WCAG 2.4.1) ===== */
.wbs-skip-link {
    position: absolute;
    top: -100%;
    left: var(--wbs-space-md);
    z-index: 9999;
    padding: var(--wbs-space-sm) var(--wbs-space-md);
    background: var(--wbs-primary);
    color: #ffffff;
    font-size: var(--wbs-font-size-sm);
    font-weight: 600;
    border-radius: 0 0 var(--wbs-radius) var(--wbs-radius);
    text-decoration: none;
    transition: top 0.15s ease;
}

.wbs-skip-link:focus {
    top: 0;
    outline: 3px solid var(--wbs-accent);
    outline-offset: 2px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--wbs-font-sans);
    font-size: var(--wbs-font-size-base);
    line-height: var(--wbs-line-height);
    color: var(--wbs-text);
    background-color: var(--wbs-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Layout Container ===== */
.wbs-container {
    max-width: var(--wbs-max-width);
    margin: 0 auto;
    padding: 0 var(--wbs-space-lg);
}

/* ===== Header ===== */
.wbs-header {
    background: var(--wbs-bg-white);
    border-bottom: 1px solid var(--wbs-border);
    height: var(--wbs-header-height);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--wbs-shadow-sm);
}

.wbs-header .wbs-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.wbs-logo {
    height: 40px;
    width: auto;
}

.wbs-nav {
    display: flex;
    gap: var(--wbs-space-lg);
    align-items: center;
}

.wbs-nav a {
    color: var(--wbs-text-muted);
    text-decoration: none;
    font-size: var(--wbs-font-size-sm);
    font-weight: 500;
    transition: color var(--wbs-transition);
}

.wbs-nav a:hover,
.wbs-nav a.active {
    color: var(--wbs-primary);
}

/* ===== Hero Section ===== */
.wbs-hero {
    background: linear-gradient(135deg, var(--wbs-primary), var(--wbs-primary-dark));
    color: white;
    padding: var(--wbs-space-3xl) 0;
    text-align: center;
}

.wbs-hero h1 {
    font-size: var(--wbs-font-size-4xl);
    font-weight: 700;
    margin: 0 0 var(--wbs-space-md);
}

.wbs-hero p {
    font-size: var(--wbs-font-size-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--wbs-space-xl);
}

/* ===== Buttons ===== */
.wbs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--wbs-space-sm);
    padding: var(--wbs-space-sm) var(--wbs-space-lg);
    border-radius: var(--wbs-radius);
    font-size: var(--wbs-font-size-sm);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all var(--wbs-transition);
    line-height: 1.5;
}

.wbs-btn-primary {
    background: var(--wbs-primary);
    color: white;
}

.wbs-btn-primary:hover {
    background: var(--wbs-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--wbs-shadow-md);
}

.wbs-btn-secondary {
    background: var(--wbs-bg-white);
    color: var(--wbs-text);
    border: 1px solid var(--wbs-border);
}

.wbs-btn-secondary:hover {
    background: var(--wbs-bg-alt);
    border-color: var(--wbs-primary);
    color: var(--wbs-primary);
}

.wbs-btn-accent {
    background: var(--wbs-accent);
    color: white;
}

.wbs-btn-accent:hover {
    background: var(--wbs-accent-dark);
}

.wbs-btn-lg {
    padding: var(--wbs-space-md) var(--wbs-space-xl);
    font-size: var(--wbs-font-size-base);
    border-radius: var(--wbs-radius-lg);
}

/* ===== Cards ===== */
.wbs-card {
    background: var(--wbs-bg-white);
    border: 1px solid var(--wbs-border);
    border-radius: var(--wbs-radius-lg);
    padding: var(--wbs-space-xl);
    box-shadow: var(--wbs-shadow-sm);
    transition: box-shadow var(--wbs-transition), transform var(--wbs-transition);
}

.wbs-card:hover {
    box-shadow: var(--wbs-shadow-md);
    transform: translateY(-2px);
}

/* ===== Footer ===== */
.wbs-footer {
    background: var(--wbs-text);
    color: var(--wbs-text-light);
    padding: var(--wbs-space-2xl) 0;
    font-size: var(--wbs-font-size-sm);
}

.wbs-footer a {
    color: var(--wbs-text-light);
    text-decoration: none;
}

.wbs-footer a:hover {
    color: white;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    :root {
        --wbs-header-height: 56px;
        --wbs-font-size-4xl: 1.75rem;
        --wbs-font-size-3xl: 1.5rem;
    }

    .wbs-container {
        padding: 0 var(--wbs-space-md);
    }

    .wbs-hero {
        padding: var(--wbs-space-2xl) 0;
    }

    .wbs-nav {
        display: none; /* Mobile menu via JS */
    }
}

@media (max-width: 480px) {
    :root {
        --wbs-font-size-4xl: 1.5rem;
        --wbs-font-size-3xl: 1.25rem;
    }
}