/**
 * OYROPA Master Design System
 * Wissenschaftlich-psychologisch optimiertes Business-Design
 * Version 2.0 - Komplett überarbeitetes Corporate Design
 */

:root {
    /* ================================ */
    /* PSYCHOLOGISCH OPTIMIERTE FARBEN */
    /* ================================ */

    /* Primärfarben - Vertrauen & Professionalität */
    --master-primary: #1A365D;        /* Dunkles Navy-Blau: Vertrauen, Stabilität, Expertise */
    --master-primary-hover: #2C5282;  /* Interaktions-Blau */
    --master-primary-light: #2B6CB3;  /* Akzent-Blau */
    --master-primary-dark: #0F2442;   /* Kontrast-Blau */

    /* Sekundärfarben - Wärme & Zugänglichkeit */
    --master-secondary: #718096;      /* Business-Grau: Neutralität, Seriosität */
    --master-accent: #D69E2E;         /* Gold-Akzent: Premium, Wert, Exklusivität */
    --master-accent-soft: #F6E05E;    /* Sanftes Gold für Highlights */

    /* Funktionale Farben */
    --master-success: #276749;        /* Gedämpftes Grün: Positiv ohne Aufdringlichkeit */
    --master-warning: #C05621;        /* Warmes Orange: Aufmerksamkeit ohne Alarm */
    --master-error: #9B2C2C;          /* Gedämpftes Rot: Ernst ohne Panik */
    --master-info: #2C5282;           /* Info-Blau */

    /* Neutrale Farbpalette */
    --master-white: #FFFFFF;
    --master-gray-50: #F9FAFB;
    --master-gray-100: #F3F4F6;
    --master-gray-200: #E5E7EB;
    --master-gray-300: #D1D5DB;
    --master-gray-400: #9CA3AF;
    --master-gray-500: #6B7280;
    --master-gray-600: #4B5563;
    --master-gray-700: #374151;
    --master-gray-800: #1F2937;
    --master-gray-900: #111827;

    /* Hintergrund-Hierarchie */
    --master-bg-primary: #FFFFFF;
    --master-bg-secondary: #F9FAFB;
    --master-bg-tertiary: #F3F4F6;
    --master-bg-overlay: rgba(17, 24, 39, 0.5);

    /* ===================== */
    /* TYPOGRAFIE-SYSTEM    */
    /* ===================== */

    /* Schriftfamilien */
    --master-font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --master-font-heading: 'Poppins', 'Inter', sans-serif;
    --master-font-mono: 'Fira Code', 'Consolas', monospace;

    /* Schriftgrößen - Responsive Scale */
    --master-text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
    --master-text-sm: clamp(0.875rem, 0.825rem + 0.2vw, 0.9375rem);
    --master-text-base: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
    --master-text-lg: clamp(1.125rem, 1.075rem + 0.2vw, 1.1875rem);
    --master-text-xl: clamp(1.25rem, 1.2rem + 0.2vw, 1.375rem);
    --master-text-2xl: clamp(1.5rem, 1.4rem + 0.4vw, 1.75rem);
    --master-text-3xl: clamp(1.875rem, 1.775rem + 0.4vw, 2.125rem);
    --master-text-4xl: clamp(2.25rem, 2.1rem + 0.6vw, 2.625rem);
    --master-text-5xl: clamp(3rem, 2.8rem + 0.8vw, 3.5rem);

    /* Zeilenhöhen */
    --master-leading-tight: 1.25;
    --master-leading-normal: 1.5;
    --master-leading-relaxed: 1.75;

    /* Schriftgewichte */
    --master-font-thin: 100;
    --master-font-light: 300;
    --master-font-normal: 400;
    --master-font-medium: 500;
    --master-font-semibold: 600;
    --master-font-bold: 700;
    --master-font-extrabold: 800;

    /* ==================== */
    /* SPACING & LAYOUT    */
    /* ==================== */

    /* Spacing Scale (8px Grid) */
    --master-space-0: 0;
    --master-space-1: 0.25rem;  /* 4px */
    --master-space-2: 0.5rem;   /* 8px */
    --master-space-3: 0.75rem;  /* 12px */
    --master-space-4: 1rem;     /* 16px */
    --master-space-5: 1.25rem;  /* 20px */
    --master-space-6: 1.5rem;   /* 24px */
    --master-space-8: 2rem;     /* 32px */
    --master-space-10: 2.5rem;  /* 40px */
    --master-space-12: 3rem;    /* 48px */
    --master-space-16: 4rem;    /* 64px */
    --master-space-20: 5rem;    /* 80px */
    --master-space-24: 6rem;    /* 96px */

    /* Container Widths */
    --master-container-xs: 20rem;    /* 320px */
    --master-container-sm: 24rem;    /* 384px */
    --master-container-md: 28rem;    /* 448px */
    --master-container-lg: 32rem;    /* 512px */
    --master-container-xl: 36rem;    /* 576px */
    --master-container-2xl: 42rem;   /* 672px */
    --master-container-3xl: 48rem;   /* 768px */
    --master-container-4xl: 56rem;   /* 896px */
    --master-container-5xl: 64rem;   /* 1024px */
    --master-container-6xl: 72rem;   /* 1152px */
    --master-container-7xl: 80rem;   /* 1280px */
    --master-container-full: 100%;

    /* =================== */
    /* DESIGN TOKENS      */
    /* =================== */

    /* Border Radius */
    --master-radius-none: 0;
    --master-radius-sm: 0.125rem;   /* 2px */
    --master-radius-base: 0.25rem;  /* 4px */
    --master-radius-md: 0.375rem;   /* 6px */
    --master-radius-lg: 0.5rem;     /* 8px */
    --master-radius-xl: 0.75rem;    /* 12px */
    --master-radius-2xl: 1rem;      /* 16px */
    --master-radius-3xl: 1.5rem;    /* 24px */
    --master-radius-full: 9999px;

    /* Shadows - Soft & Professional */
    --master-shadow-xs: 0 0 0 1px rgba(0, 0, 0, 0.05);
    --master-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --master-shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --master-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --master-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --master-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --master-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --master-shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

    /* Transitions */
    --master-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --master-transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --master-transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --master-transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-Index Scale */
    --master-z-0: 0;
    --master-z-10: 10;
    --master-z-20: 20;
    --master-z-30: 30;
    --master-z-40: 40;
    --master-z-50: 50;
    --master-z-dropdown: 1000;
    --master-z-sticky: 1020;
    --master-z-fixed: 1030;
    --master-z-modal-backdrop: 1040;
    --master-z-modal: 1050;
    --master-z-popover: 1060;
    --master-z-tooltip: 1070;
    --master-z-notification: 1080;
    --master-z-top: 9999;
}

/* ======================== */
/* GLOBAL RESET & BASE     */
/* ======================== */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--master-font-primary);
    font-size: var(--master-text-base);
    line-height: var(--master-leading-normal);
    color: var(--master-gray-800);
    background-color: var(--master-bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ====================== */
/* HEADINGS & TYPOGRAPHY */
/* ====================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--master-font-heading);
    font-weight: var(--master-font-semibold);
    line-height: var(--master-leading-tight);
    color: var(--master-gray-900);
    margin-bottom: var(--master-space-4);
}

h1 {
    font-size: var(--master-text-5xl);
    font-weight: var(--master-font-bold);
    letter-spacing: -0.025em;
}

h2 {
    font-size: var(--master-text-4xl);
    letter-spacing: -0.02em;
}

h3 {
    font-size: var(--master-text-3xl);
    letter-spacing: -0.01em;
}

h4 {
    font-size: var(--master-text-2xl);
}

h5 {
    font-size: var(--master-text-xl);
}

h6 {
    font-size: var(--master-text-lg);
}

p {
    margin-bottom: var(--master-space-4);
    color: var(--master-gray-700);
}

/* Lead Text */
.lead {
    font-size: var(--master-text-lg);
    line-height: var(--master-leading-relaxed);
    color: var(--master-gray-600);
    font-weight: var(--master-font-normal);
}

/* ================ */
/* BUTTONS & CTA   */
/* ================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--master-space-3) var(--master-space-6);
    font-size: var(--master-text-base);
    font-weight: var(--master-font-medium);
    line-height: 1;
    border-radius: var(--master-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--master-transition-fast);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.btn:focus {
    outline: 2px solid var(--master-primary);
    outline-offset: 2px;
}

/* Primary Button */
.btn-primary {
    background-color: var(--master-primary);
    color: var(--master-white);
    border-color: var(--master-primary);
}

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

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--master-shadow-sm);
}

/* Secondary Button */
.btn-secondary {
    background-color: var(--master-white);
    color: var(--master-gray-700);
    border-color: var(--master-gray-300);
}

.btn-secondary:hover {
    background-color: var(--master-gray-50);
    border-color: var(--master-gray-400);
}

/* Accent Button */
.btn-accent {
    background-color: var(--master-accent);
    color: var(--master-white);
    border-color: var(--master-accent);
}

.btn-accent:hover {
    background-color: var(--master-accent-soft);
    transform: translateY(-1px);
    box-shadow: var(--master-shadow-lg);
}

/* Button Sizes */
.btn-sm {
    padding: var(--master-space-2) var(--master-space-4);
    font-size: var(--master-text-sm);
}

.btn-lg {
    padding: var(--master-space-4) var(--master-space-8);
    font-size: var(--master-text-lg);
}

.btn-xl {
    padding: var(--master-space-5) var(--master-space-10);
    font-size: var(--master-text-xl);
}

/* ================ */
/* CARDS & PANELS  */
/* ================ */

.card {
    background-color: var(--master-white);
    border-radius: var(--master-radius-lg);
    box-shadow: var(--master-shadow-base);
    padding: var(--master-space-6);
    transition: all var(--master-transition-base);
}

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

.card-header {
    margin-bottom: var(--master-space-4);
    padding-bottom: var(--master-space-4);
    border-bottom: 1px solid var(--master-gray-200);
}

.card-title {
    font-size: var(--master-text-xl);
    font-weight: var(--master-font-semibold);
    color: var(--master-gray-900);
    margin: 0;
}

.card-body {
    color: var(--master-gray-600);
}

.card-footer {
    margin-top: var(--master-space-4);
    padding-top: var(--master-space-4);
    border-top: 1px solid var(--master-gray-200);
}

/* ==================== */
/* FORMS & INPUTS      */
/* ==================== */

.form-group {
    margin-bottom: var(--master-space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--master-space-2);
    font-size: var(--master-text-sm);
    font-weight: var(--master-font-medium);
    color: var(--master-gray-700);
}

.form-control {
    display: block;
    width: 100%;
    padding: var(--master-space-3) var(--master-space-4);
    font-size: var(--master-text-base);
    font-weight: var(--master-font-normal);
    line-height: var(--master-leading-normal);
    color: var(--master-gray-900);
    background-color: var(--master-white);
    background-clip: padding-box;
    border: 1px solid var(--master-gray-300);
    border-radius: var(--master-radius-md);
    transition: border-color var(--master-transition-fast),
                box-shadow var(--master-transition-fast);
}

.form-control:focus {
    color: var(--master-gray-900);
    background-color: var(--master-white);
    border-color: var(--master-primary);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-control::placeholder {
    color: var(--master-gray-400);
}

/* ================== */
/* NAVIGATION & MENU */
/* ================== */

.navbar {
    background-color: var(--master-white);
    border-bottom: 1px solid var(--master-gray-200);
    padding: var(--master-space-4) 0;
    box-shadow: var(--master-shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--master-z-sticky);
}

.nav-container {
    max-width: var(--master-container-7xl);
    margin: 0 auto;
    padding: 0 var(--master-space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: var(--master-text-2xl);
    font-weight: var(--master-font-bold);
    color: var(--master-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--master-space-3);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--master-space-8);
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--master-gray-700);
    text-decoration: none;
    font-weight: var(--master-font-medium);
    transition: color var(--master-transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--master-primary);
}

.nav-link.active {
    color: var(--master-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--master-primary);
}

/* =============== */
/* FOOTER DESIGN  */
/* =============== */

.footer {
    background-color: var(--master-gray-900);
    color: var(--master-gray-300);
    padding: var(--master-space-16) 0 var(--master-space-8);
    margin-top: var(--master-space-20);
}

.footer-container {
    max-width: var(--master-container-7xl);
    margin: 0 auto;
    padding: 0 var(--master-space-6);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--master-space-8);
    margin-bottom: var(--master-space-12);
}

.footer-heading {
    font-size: var(--master-text-lg);
    font-weight: var(--master-font-semibold);
    color: var(--master-white);
    margin-bottom: var(--master-space-4);
}

.footer-link {
    color: var(--master-gray-400);
    text-decoration: none;
    transition: color var(--master-transition-fast);
}

.footer-link:hover {
    color: var(--master-white);
}

/* =================== */
/* RESPONSIVE DESIGN  */
/* =================== */

/* Mobile First Breakpoints */
@media (max-width: 640px) {
    :root {
        --master-text-5xl: 2rem;
        --master-text-4xl: 1.75rem;
        --master-text-3xl: 1.5rem;
        --master-text-2xl: 1.25rem;
    }

    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .card {
        padding: var(--master-space-4);
    }

    .btn {
        width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 641px) and (max-width: 768px) {
    /* Tablet Styles */
    .nav-container {
        padding: 0 var(--master-space-4);
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    /* Small Desktop */
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1025px) {
    /* Large Desktop */
    .container {
        max-width: var(--master-container-7xl);
        margin: 0 auto;
    }
}

/* ==================== */
/* UTILITY CLASSES     */
/* ==================== */

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

/* Display */
.d-none { display: none; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.align-start { align-items: flex-start; }
.align-center { align-items: center; }
.align-end { align-items: flex-end; }

/* Spacing */
.m-0 { margin: 0; }
.m-1 { margin: var(--master-space-1); }
.m-2 { margin: var(--master-space-2); }
.m-3 { margin: var(--master-space-3); }
.m-4 { margin: var(--master-space-4); }
.m-5 { margin: var(--master-space-5); }
.m-6 { margin: var(--master-space-6); }
.m-8 { margin: var(--master-space-8); }

.p-0 { padding: 0; }
.p-1 { padding: var(--master-space-1); }
.p-2 { padding: var(--master-space-2); }
.p-3 { padding: var(--master-space-3); }
.p-4 { padding: var(--master-space-4); }
.p-5 { padding: var(--master-space-5); }
.p-6 { padding: var(--master-space-6); }
.p-8 { padding: var(--master-space-8); }

/* Borders */
.border { border: 1px solid var(--master-gray-300); }
.border-0 { border: 0; }
.border-top { border-top: 1px solid var(--master-gray-300); }
.border-bottom { border-bottom: 1px solid var(--master-gray-300); }

/* Shadows */
.shadow-sm { box-shadow: var(--master-shadow-sm); }
.shadow { box-shadow: var(--master-shadow-base); }
.shadow-md { box-shadow: var(--master-shadow-md); }
.shadow-lg { box-shadow: var(--master-shadow-lg); }
.shadow-xl { box-shadow: var(--master-shadow-xl); }

/* Background Colors */
.bg-primary { background-color: var(--master-primary); }
.bg-secondary { background-color: var(--master-secondary); }
.bg-white { background-color: var(--master-white); }
.bg-light { background-color: var(--master-gray-100); }
.bg-dark { background-color: var(--master-gray-900); }

/* Text Colors */
.text-primary { color: var(--master-primary); }
.text-secondary { color: var(--master-secondary); }
.text-white { color: var(--master-white); }
.text-muted { color: var(--master-gray-500); }
.text-dark { color: var(--master-gray-900); }

/* ====================== */
/* ANIMATIONS & EFFECTS  */
/* ====================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-fadeIn {
    animation: fadeIn 0.3s ease-out;
}

.animate-slideIn {
    animation: slideIn 0.3s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* ==================== */
/* ACCESSIBILITY       */
/* ==================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--master-primary);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --master-primary: #0D47A1;
        --master-gray-900: #000000;
        --master-gray-100: #FFFFFF;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ================= */
/* PRINT STYLES     */
/* ================= */

@media print {
    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    .navbar,
    .footer,
    .no-print {
        display: none;
    }

    .card {
        break-inside: avoid;
    }

    a {
        text-decoration: underline;
    }

    a[href^="http"]:after {
        content: " (" attr(href) ")";
    }
}