/**
 * Ferienhaus Adršpach - Main Stylesheet
 * Warm Brown Branding Theme
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Colors */
    --color-bg: #ffffff;
    --color-bg-cream: hsl(30, 20%, 98%);
    --color-primary: hsl(35, 92%, 33%);
    --color-primary-light: hsl(35, 92%, 40%);
    --color-primary-dark: hsl(35, 92%, 26%);
    --color-text: hsl(20, 14.3%, 4.1%);
    --color-text-light: hsl(20, 14.3%, 35%);
    --color-text-muted: hsl(20, 14.3%, 50%);
    --color-border: hsl(30, 15%, 85%);
    --color-success: hsl(142, 76%, 36%);
    --color-error: hsl(0, 84%, 60%);
    --color-warning: hsl(38, 92%, 50%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--space-md);
}

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

.text-muted { color: var(--color-text-muted); }
.text-small { font-size: 0.875rem; }
.text-large { font-size: 1.125rem; }

/* ============================================
   LAYOUT
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-3xl) 0;
}

.section-bg {
    background-color: var(--color-bg-cream);
}

.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex {
    display: flex;
}

.flex-wrap { flex-wrap: wrap; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
}

.logo span {
    color: var(--color-primary);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--space-sm) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.lang-link {
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.lang-link:hover,
.lang-link.active {
    background-color: var(--color-primary);
    color: white;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.3), rgba(0,0,0,0.5));
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: white;
    padding: var(--space-xl);
    max-width: 800px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-xl);
    opacity: 0.95;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background-color: var(--color-primary);
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.hero-cta:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
    color: white;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 0.875rem;
    opacity: 0.8;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

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

.btn-outline {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline:hover {
    background-color: white;
    color: var(--color-text);
}

.btn-lg {
    padding: var(--space-lg) var(--space-xl);
    font-size: 1.125rem;
}

.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--color-text);
}

.form-label .required {
    color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    font-size: 1rem;
    font-family: inherit;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(200, 130, 16, 0.1);
}

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

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: var(--space-xl);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.form-hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.form-error {
    font-size: 0.875rem;
    color: var(--color-error);
    margin-top: var(--space-xs);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
}

/* ============================================
   BOOKING SECTION
   ============================================ */
.booking-section {
    background-color: var(--color-bg-cream);
}

.booking-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-2xl);
    align-items: start;
}

.booking-form {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.booking-sidebar {
    position: sticky;
    top: 90px;
}

.price-summary {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.price-summary-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.price-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px dashed var(--color-border);
}

.price-row:last-child {
    border-bottom: none;
}

.price-row.discount {
    color: var(--color-success);
}

.price-row.total {
    font-size: 1.25rem;
    font-weight: 600;
    border-top: 2px solid var(--color-text);
    border-bottom: none;
    margin-top: var(--space-md);
    padding-top: var(--space-md);
}

/* ============================================
   CALENDAR
   ============================================ */
.calendar-widget {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.calendar-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.calendar-nav {
    display: flex;
    gap: var(--space-sm);
}

.calendar-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-cream);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

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

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.calendar-weekday {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    padding: var(--space-sm);
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.calendar-day:hover:not(.disabled):not(.booked) {
    background: var(--color-bg-cream);
}

.calendar-day.other-month {
    color: var(--color-text-muted);
}

.calendar-day.today {
    font-weight: 600;
}

.calendar-day.selected {
    background: var(--color-primary);
    color: white;
}

.calendar-day.booked {
    background: var(--color-error);
    color: white;
    cursor: not-allowed;
}

.calendar-day.checkin {
    background: var(--color-success);
    color: white;
}

.calendar-day.range {
    background: rgba(200, 130, 16, 0.2);
}

.calendar-legend {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
    font-size: 0.875rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.legend-dot.available { background: var(--color-bg-cream); border: 1px solid var(--color-border); }
.legend-dot.booked { background: var(--color-error); }
.legend-dot.checkin { background: var(--color-success); }

/* ============================================
   CARDS
   ============================================ */
.card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-image {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

.card-content {
    padding: var(--space-xl);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.card-text {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

/* ============================================
   FEATURES
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.feature-item {
    text-align: center;
    padding: var(--space-xl);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    background: var(--color-bg-cream);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.feature-title {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.feature-text {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--color-text);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-title {
    color: white;
    font-size: 1.125rem;
    margin-bottom: var(--space-lg);
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.footer-links {
    list-style: none;
}

.footer-link {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    padding: var(--space-xs) 0;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

/* ============================================
   ALERTS & MESSAGES
   ============================================ */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--color-warning);
    color: var(--color-warning);
}

/* ============================================
   SPINNER & LOADING
   ============================================ */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .booking-container {
        grid-template-columns: 1fr;
    }
    
    .booking-sidebar {
        position: static;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background: white;
        flex-direction: column;
        padding: var(--space-xl);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    
    .nav.active {
        transform: translateX(0);
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .section {
        padding: var(--space-2xl) 0;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .header,
    .footer,
    .hero-scroll,
    .btn {
        display: none !important;
    }
    
    .hero {
        height: auto;
        min-height: auto;
        padding: var(--space-xl) 0;
    }
    
    .hero-content {
        color: var(--color-text);
    }
    
    body {
        font-size: 12pt;
    }
}