/* -------------------------------- */
/* Custom Properties & Fonts        */
/* -------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&family=Source+Sans+3:wght@400;600&display=swap');

:root {
    /* Farbstimmung */
    --color-bg-dark: #0C1B2A; /* Nachtblau */
    --color-text-light: #F8FAFC; /* Schneeweiß */
    --color-primary: #D9AE5F; /* Warmlicht-Gold */
    --color-accent: #9ED0FF; /* Eisblau */
    --color-card-bg: #1A2A3A; /* Dunkleres Blau für Karten/Elemente */
    
    /* Typografie */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Source Sans 3', sans-serif;
    
    /* Layout */
    --container-width: 1200px;
    --transition-speed: 0.3s;
}

/* -------------------------------- */
/* Reset and Base Styles            */
/* -------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-secondary);
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    line-height: 1.6;
    /* Hintergrundmuster für High-Tech-Look */
    background-image: url('../assets/pattern.svg');
    background-attachment: fixed;
}

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

a:hover { color: var(--color-accent); }

h1, h2, h3 {
    font-family: var(--font-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); color: var(--color-accent); }
h3 { font-size: 1.25rem; }

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

.container-small {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section { padding: 5rem 0; }
.bg-light { background-color: var(--color-card-bg); }
.bg-dark { background-color: #08121c; }

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

/* -------------------------------- */
/* Buttons                          */
/* -------------------------------- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 50px; /* Rounded buttons */
    font-weight: 600;
    text-align: center;
    transition: transform var(--transition-speed), background-color var(--transition-speed), color var(--transition-speed);
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover, .btn-primary:focus {
    background-color: #c09850;
    transform: translateY(-2px);
    color: var(--color-bg-dark);
}

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

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--color-primary);
    color: var(--color-bg-dark);
    transform: translateY(-2px);
}

/* -------------------------------- */
/* Header and Navigation            */
/* -------------------------------- */
header {
    background-color: rgba(12, 27, 42, 0.95);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.5);
}

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

.logo {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-light);
}

/* Mobile Toggle (Hamburger) */
#nav-toggle {
    display: none; background: none; border: none; cursor: pointer;
    padding: 0.5rem; position: relative; z-index: 1001;
}

.hamburger, .hamburger::before, .hamburger::after {
    display: block; width: 25px; height: 3px;
    background-color: var(--color-text-light);
    transition: transform 0.3s ease-in-out, background-color 0.3s ease-in-out;
}

.hamburger::before { content: ''; position: absolute; transform: translateY(-8px); }
.hamburger::after { content: ''; position: absolute; transform: translateY(8px); }

/* Desktop Menu */
#nav-menu {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

#nav-menu a {
    color: var(--color-text-light);
    font-weight: 600;
}

#nav-menu a:hover, #nav-menu a[aria-current="page"] {
    color: var(--color-primary);
}

/* -------------------------------- */
/* Hero Section                     */
/* -------------------------------- */
.hero-section {
    padding: 8rem 0;
    text-align: center;
    /* Hintergrundbild mit Overlay für Lesbarkeit */
    background-image: linear-gradient(rgba(12, 27, 42, 0.88), rgba(12, 27, 42, 0.95)), url('../assets/hero.jpg');
    background-size: cover;
    background-position: center;
}

.hero-section h1 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.hero-section .subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-accent);
}

.hero-section .tagline {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* -------------------------------- */
/* Features Section (Cards)         */
/* -------------------------------- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background-color: var(--color-card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    /* Dezenter Gold-Rand */
    border: 1px solid rgba(217, 174, 95, 0.2);
}

.card:hover {
    transform: translateY(-5px);
    /* Leichter Glüheffekt beim Hover */
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6), 0 0 15px rgba(217, 174, 95, 0.3);
}

/* -------------------------------- */
/* Adventskalender (The 31 Days)    */
/* -------------------------------- */
#calendar { text-align: center; }

.calendar-grid {
    display: grid;
    /* 7 Spalten für das geforderte 7x5 Raster (Desktop) */
    grid-template-columns: repeat(7, 1fr); 
    gap: 1rem;
    margin-top: 3rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.day-tile {
    display: block;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-primary);
    border-radius: 8px;
    padding: 1.5rem 0.5rem;
    text-align: center;
    font-family: var(--font-primary);
    color: var(--color-text-light);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), background-color var(--transition-speed);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

/* Hover-Effekt: Leichtes Glühen */
.day-tile:hover, .day-tile:focus {
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(217, 174, 95, 0.8); 
    background-color: #2a3a4a;
    color: var(--color-text-light);
    outline: none;
}

.day-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.day-label {
    display: block;
    font-size: 0.9rem;
}

/* Booster-Woche Badge (Stern) */
.booster-badge::after {
    content: '★';
    position: absolute;
    top: 5px;
    right: 5px;
    color: var(--color-accent);
    font-size: 1.3rem;
    /* Dezente Animation (Twinkle) */
    animation: twinkle 2.5s infinite alternate;
}

@keyframes twinkle {
    from { opacity: 0.5; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1.1); }
}

/* -------------------------------- */
/* FAQ Section                      */
/* -------------------------------- */
.faq-item {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* -------------------------------- */
/* Subpages & Forms                 */
/* -------------------------------- */
.content-page { padding: 3rem 0; }

/* Kontaktformular */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.contact-form label {
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
}

.contact-form input, .contact-form textarea {
    padding: 0.75rem;
    border-radius: 4px;
    border: 1px solid var(--color-primary);
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    font-family: inherit;
    font-size: 1rem;
    width: 100%;
}

.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 5px var(--color-accent);
}

/* Prompt Box (auf den Tag-Seiten) */
.prompt-box {
    background-color: var(--color-card-bg);
    border-left: 4px solid var(--color-primary);
    padding: 1rem;
    font-family: monospace;
    overflow-x: auto;
    white-space: pre-wrap;
}

/* -------------------------------- */
/* Footer                           */
/* -------------------------------- */
footer {
    background-color: #08121c;
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

footer nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
}

/* -------------------------------- */
/* Animationen (Schneefall)         */
/* -------------------------------- */
#animation-container {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100vh;
    pointer-events: none;
    z-index: -1; /* Hinter dem Inhalt */
    overflow: hidden;
}

.snowflake {
    position: absolute;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: snowfall linear infinite;
}

@keyframes snowfall {
    0% { transform: translateY(-10vh) rotate(0deg); opacity: 0.8; }
    100% { transform: translateY(100vh) rotate(360deg); opacity: 0.2; }
}

/* Reduced Motion Preference Handling */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        /* Animationen und Übergänge deaktivieren */
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    /* Stern-Animation deaktivieren */
    .booster-badge::after { animation: none; transform: scale(1); }
    /* Schneefall wird per JS gehandhabt, aber zur Sicherheit auch hier ausblenden */
     #animation-container { display: none; }
}

/* -------------------------------- */
/* Responsive Design (Mobile First) */
/* -------------------------------- */

@media (max-width: 1024px) {
    /* Kalender auf 5 Spalten reduzieren */
     .calendar-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 768px) {
    /* Mobile Navigation aktivieren */
    #nav-toggle { display: block; }

    #nav-menu {
        display: none; /* Standardmäßig versteckt, per JS gezeigt */
        position: absolute;
        top: 100%; left: 0; right: 0;
        background-color: var(--color-bg-dark);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
        text-align: center;
    }

    #nav-menu.is-active { display: flex; }

    /* Hamburger zu X Animation */
    #nav-toggle[aria-expanded="true"] .hamburger {
        background-color: transparent; /* Mittlerer Strich ausblenden */
    }

    #nav-toggle[aria-expanded="true"] .hamburger::before {
        transform: rotate(45deg) translate(5px, 6px);
    }

    #nav-toggle[aria-expanded="true"] .hamburger::after {
        transform: rotate(-45deg) translate(5px, -6px);
    }

    /* Kalender auf 4 Spalten reduzieren */
    .calendar-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.75rem;
    }

    .day-tile { padding: 1rem 0.25rem; }
    .day-number { font-size: 1.5rem; }

    /* Footer Layout anpassen */
    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    /* Kalender auf 3 Spalten reduzieren */
    .calendar-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Buttons untereinander stapeln */
    .cta-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .btn { display: block; width: 100%; }
}