/* style.css - Modernes Bento-Grid Design passend zur Hauptseite */

:root {
    /* Absicherung falls base.css nicht geladen wird */
    --bg-dark: #0f0f0f;
    --surface-dark: #161616;
    --border-dark: #252525;
    --accent-color: #26A69A;
    --accent-red: #c1432a;
    --text-dark: #d4d0c8;
    --dim-dark: #777;
    --font-serif: 'Literata', Georgia, serif;
    --font-mono: 'IBM Plex Mono', monospace;
    --border-r: 2px;
}

/* Basis & Hintergrund-Konfiguration */
body {
    position: relative;
    min-height: 100vh;
    margin: 0;
    background: url('/assets/calendar_background.png') no-repeat center center fixed;
    background-size: cover;
    background-color: var(--bg, var(--bg-dark));
    color: var(--text, var(--text-dark));
    font-family: var(--serif, var(--font-serif));
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

/* Dunkler Schleier (Veil) über dem Hintergrundbild für exzellenten Kontrast */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: linear-gradient(
        135deg, 
        rgba(15, 15, 15, 0.82) 0%, 
        rgba(22, 22, 22, 0.78) 100%
    );
    z-index: 0;
    pointer-events: none;
}

/* Schnee Canvas */
#snowCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
}

/* Header-Bereich */
.calendar-header {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 3rem 2rem 1.5rem;
    box-sizing: border-box;
}

.calendar-header .title-wrap {
    margin-top: 1.5rem;
}

.calendar-header h1 {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--mono, var(--font-mono));
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dim, var(--dim-dark));
    text-decoration: none;
    border: 1px solid var(--border, var(--border-dark));
    border-radius: var(--r, var(--border-r));
    padding: 0.6rem 1.2rem;
    background: rgba(22, 22, 22, 0.65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: border-color 0.25s, color 0.25s, background-color 0.25s;
}

.back-link:hover {
    border-color: var(--accent, var(--accent-color));
    color: var(--accent, var(--accent-color));
    background: rgba(22, 22, 22, 0.85);
    text-decoration: none;
}

.back-link svg {
    width: 12px;
    height: 12px;
    transition: transform 0.2s;
}

.back-link:hover svg {
    transform: translateX(-3px);
}

/* Musik Player */
.music-player {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(22, 22, 22, 0.82);
    border: 1px solid var(--border, var(--border-dark));
    border-radius: var(--r, var(--border-r));
    padding: 0.5rem 0.8rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.music-player:hover {
    border-color: rgba(38, 166, 154, 0.4);
}

.music-btn {
    background: none;
    border: none;
    color: var(--dim, var(--dim-dark));
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    transition: color 0.2s;
}

.music-btn:hover {
    color: var(--accent, var(--accent-color));
}

.music-icon {
    width: 18px;
    height: 18px;
}

/* Soundwellen Animation bei Wiedergabe */
.music-player.playing .sound-waves {
    animation: wavePulse 1.2s ease-in-out infinite alternate;
    transform-origin: center;
}

@keyframes wavePulse {
    0% { opacity: 0.3; transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1.1); }
}

.volume-control {
    display: flex;
    align-items: center;
}

.volume-slider {
    -webkit-appearance: none;
    width: 60px;
    height: 3px;
    background: var(--border, var(--border-dark));
    border-radius: 2px;
    outline: none;
    transition: width 0.3s ease, background 0.3s;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent, var(--accent-color));
    cursor: pointer;
    transition: transform 0.1s;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.volume-slider::-moz-range-thumb {
    width: 10px;
    height: 10px;
    border: none;
    border-radius: 50%;
    background: var(--accent, var(--accent-color));
    cursor: pointer;
    transition: transform 0.1s;
}

/* Bento Grid Container */
.calendar-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 1.5rem 2rem 5rem;
    box-sizing: border-box;
    flex: 1;
}

/* Asymmetrisches Bento Grid */
#app {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: minmax(130px, auto);
    gap: 1.25rem;
    grid-auto-flow: dense;
}

/* Einzelnes Türchen (Day) */
.day {
    position: relative;
    border: 1px solid var(--border, var(--border-dark));
    border-radius: var(--r, var(--border-r));
    background: rgba(22, 22, 22, 0.55);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), 
                border-color 0.3s, 
                box-shadow 0.3s, 
                background-color 0.3s;
    user-select: none;
    overflow: hidden;
    aspect-ratio: auto !important; /* Bento-Überschreibung */
    height: auto !important;
    padding: 0 !important;
    margin: 0 !important;
}

/* Türchen-Größen (Bento Spans) */
.day.size-1x1 {
    grid-column: span 1;
    grid-row: span 1;
}
.day.size-2x1 {
    grid-column: span 2;
    grid-row: span 1;
}
.day.size-1x2 {
    grid-column: span 1;
    grid-row: span 2;
}
.day.size-2x2 {
    grid-column: span 2;
    grid-row: span 2;
}

/* Hover-Effekte für geschlossene Türchen */
.day:hover {
    transform: translateY(-4px);
    border-color: var(--accent, var(--accent-color));
    box-shadow: 0 10px 25px rgba(38, 166, 154, 0.18);
    background: rgba(26, 26, 26, 0.7);
}

/* Nummer im geschlossenen Türchen */
.day-num {
    font-family: var(--mono, var(--font-mono));
    font-size: 2.2rem;
    font-weight: 500;
    color: var(--heading, #eae8e0);
    z-index: 2;
    transition: transform 0.3s, opacity 0.3s;
}

.day.size-2x2 .day-num {
    font-size: 3.5rem;
}

/* Lock Icon für geschlossene Türchen */
.day-status-icon {
    position: absolute;
    bottom: 12px;
    right: 12px;
    width: 14px;
    height: 14px;
    color: var(--dim, var(--dim-dark));
    opacity: 0.6;
    z-index: 2;
    transition: color 0.3s, opacity 0.3s;
}

.day:hover .day-status-icon {
    color: var(--accent, var(--accent-color));
    opacity: 1;
}

/* Kacheln mit Bildern (quadratische Türchen) */
.day.has-image {
    border-color: rgba(38, 166, 154, 0.25);
}

/* Pseudo-Element für das Hintergrundbild (verhindert Filter-Auswirkung auf Texte/Icons) */
.day.has-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--bg-img);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
    transition: filter 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    /* Standard-Filter im geschlossenen Zustand: Dunkel & leicht entsättigt */
    filter: brightness(0.6) grayscale(0.1);
}

/* Im geöffneten Zustand: Filter aufheben (voller Glanz) */
.day.has-image.opened::before {
    filter: brightness(1) grayscale(0);
}

/* Hover-Effekt auf ungeöffneten, bereiten Türchen */
.day.has-image:not(.opened):not(.locked):hover::before {
    filter: brightness(0.75) grayscale(0);
}

/* Im gesperrten Zustand (Zukunft): Noch dunkler & komplett schwarz-weiß */
.day.has-image.locked::before {
    filter: brightness(0.4) grayscale(0.3);
}

/* Dunkles Overlay im geöffneten Zustand für Lesbarkeit der Nummer */
.day.opened::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top, 
        rgba(15, 15, 15, 0.8) 0%, 
        rgba(15, 15, 15, 0.2) 100%
    );
    z-index: 1;
    transition: opacity 0.3s;
    pointer-events: none;
}

.day.opened:hover::after {
    opacity: 0.6;
}

/* Wenn geöffnet: Nummer verkleinern und in die linke untere Ecke schieben */
.day.opened .day-num {
    position: absolute;
    bottom: 12px;
    left: 12px;
    font-size: 1.25rem;
    opacity: 0.9;
    z-index: 2;
}

.day.opened.size-2x2 .day-num {
    font-size: 2.2rem;
}

.day.opened .day-status-icon {
    color: var(--accent, var(--accent-color));
    opacity: 0.9;
}

/* Locked (Zukünftiger Zustand) */
.day.locked {
    cursor: not-allowed;
    opacity: 0.65;
    background: rgba(18, 18, 18, 0.4);
    border-color: rgba(37, 37, 37, 0.5);
}

.day.locked:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--accent-red);
    background: rgba(18, 18, 18, 0.5);
}

.day.locked:hover .day-status-icon {
    color: var(--accent-red);
    opacity: 1;
}

.day.locked .day-num {
    color: var(--dim, var(--dim-dark));
}

/* Modal Styling */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(10, 10, 10, 0.82);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    padding: 1rem;
}

.modal.show {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 760px;
    background: var(--surface, var(--surface-dark));
    border: 1px solid var(--border, var(--border-dark));
    border-radius: var(--r, var(--border-r));
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.65);
    overflow: hidden;
    transform: scale(0.95) translateY(10px);
    transition: transform 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.modal.show .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 0.8rem;
    right: 1.1rem;
    background: none;
    border: none;
    color: var(--dim, var(--dim-dark));
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    z-index: 10;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--accent, var(--accent-color));
}

.modal-body {
    display: flex;
    flex-direction: row;
    min-height: 380px;
}

.modal-image-container {
    width: 45%;
    position: relative;
    overflow: hidden;
    background: #000;
}

.modal-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.modal-text-container {
    width: 55%;
    padding: 3rem 2.5rem;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.modal-day-badge {
    font-family: var(--mono, var(--font-mono));
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent, var(--accent-color));
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.modal-day-badge::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border, var(--border-dark));
}

.modal-quote {
    font-family: var(--serif, var(--font-serif));
    font-size: 1.25rem;
    line-height: 1.7;
    font-style: italic;
    color: var(--heading, #eae8e0);
    margin: 0 0 2rem 0;
    position: relative;
}

.modal-quote::before {
    content: '„';
    font-size: 2.5rem;
    position: absolute;
    left: -1.2rem;
    top: -0.8rem;
    color: rgba(38, 166, 154, 0.2);
    font-family: serif;
}

.modal-footer-info {
    margin-top: auto;
    border-top: 1px solid var(--border, var(--border-dark));
    padding-top: 1rem;
}

.modal-author {
    font-family: var(--mono, var(--font-mono));
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    color: var(--dim, var(--dim-dark));
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translate(-50%, 15px);
    background: rgba(193, 67, 42, 0.95); /* gk_red mit Transparenz */
    border: 1px solid var(--accent-red);
    color: #fff;
    padding: 0.8rem 1.6rem;
    font-family: var(--mono, var(--font-mono));
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    border-radius: var(--r, var(--border-r));
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* Responsive Anpassungen */
@media (max-width: 992px) {
    #app {
        grid-template-columns: repeat(4, 1fr);
        grid-auto-rows: minmax(130px, auto);
    }
    .modal-content {
        max-width: 640px;
    }
}

@media (max-width: 768px) {
    .modal-body {
        flex-direction: column;
    }
    .modal-image-container {
        width: 100%;
        height: 200px;
    }
    .modal-text-container {
        width: 100%;
        padding: 2rem;
    }
    .calendar-header {
        padding: 2rem 1rem 1rem;
    }
    .calendar-container {
        padding: 1rem 1rem 4rem;
    }
}

@media (max-width: 576px) {
    #app {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: minmax(120px, auto);
        gap: 0.75rem;
    }
    .day.size-2x2, .day.size-2x1 {
        grid-column: span 2;
    }
    .day.size-1x2 {
        grid-row: span 2;
    }
    .music-player {
        top: auto;
        bottom: 1.5rem;
        right: 1.5rem;
        box-shadow: 0 5px 20px rgba(0,0,0,0.4);
    }
}