:root {
    --primary-color: #007aff;
    --primary-hover: #005bb5;
    --bg-color: #f2f2f7;
    --card-bg: #ffffff;
    --text-main: #1c1c1e;
    --text-muted: #8e8e93;
    --border-color: #e5e5ea;
    --danger-color: #ff3b30;
    --danger-hover: #d32f2f;
    --success-color: #34c759;
    --share-color: #5856d6;
    --share-hover: #4a47bc;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --radius: 16px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
    --primary-color: #0a84ff;
    --primary-hover: #409cff;
    --bg-color: #000000;
    --card-bg: #1c1c1e;
    --text-main: #f2f2f7;
    --text-muted: #aeaeb2;
    --border-color: #38383a;
    --share-color: #5e5ce6;
    --share-hover: #7b79f7;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html {
    /* Verhindert den Bounce-Effekt am gesamten Dokument */
    overscroll-behavior: none;
    height: 100%;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    transition: background-color 0.3s, color 0.3s;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    overscroll-behavior-y: none;
    overflow-x: hidden;
}

*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

.hidden {
    display: none !important;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    flex: 1;
    width: 100%;
}

/* Header */
.app-header {
    background-color: var(--card-bg);
    padding: 16px 20px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.branding {
    display: flex;
    align-items: center;
    gap: 12px;
}

.title-group h1 {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.version {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 400;
    background: var(--border-color);
    padding: 2px 6px;
    border-radius: 8px;
}

.subtitle { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

.icon-btn {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    padding: 10px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
    min-width: 44px;
    min-height: 44px;
    flex-shrink: 0;
}
.icon-btn:hover { background-color: var(--border-color); }

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; margin-bottom: 16px; font-size: 1.1rem; }

/* Upload Section */
.upload-section {
    border: 2px dashed var(--primary-color);
    text-align: center;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}
.upload-section.dragover { background-color: rgba(0, 122, 255, 0.1); }
.hidden-input { display: none; }

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}
.upload-icon { color: var(--primary-color); }
.format-hint { font-size: 0.8rem; color: var(--text-muted); margin: 0; }
/* ==========================================================================
   Footer
   ========================================================================== */
.app-footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 24px 20px calc(24px + env(safe-area-inset-bottom, 0px));
    margin-top: auto;
    width: 100%;
    transition: background-color 0.3s, border-color 0.3s;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
}

.footer-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.copyright, .footer-powered { white-space: nowrap; }
.footer-divider { display: none; color: var(--border-color); user-select: none; }

.footer-powered {
    color: var(--text-muted); text-decoration: none; font-weight: 500;
    display: inline-flex; align-items: center; gap: 6px; transition: color 0.2s ease;
    min-height: 24px;
}
.footer-powered:hover { color: var(--primary-color); }
.footer-icon { opacity: 0.85; flex-shrink: 0; }

.footer-right {
    width: 100%; display: flex; flex-direction: column; align-items: center; gap: 10px;
}

.footer-support-btn, .footer-coffee-btn {
    font-family: inherit; font-size: 0.85rem; font-weight: 600;
    cursor: pointer; padding: 10px 20px; border-radius: 30px;
    display: inline-flex; align-items: center; justify-content: center;
    gap: 8px; min-height: 44px; width: 100%; max-width: 280px; text-decoration: none;
    box-sizing: border-box; transition: transform 0.1s;
}

.footer-support-btn {
    background: var(--bg-color); border: 1px solid var(--border-color); color: var(--text-main);
}
.footer-support-btn:hover { border-color: var(--text-muted); color: var(--primary-color); }

.footer-coffee-btn {
    background: #FFCC00; border: 1px solid #E6B800; color: #1C1C1E;
    box-shadow: 0 2px 8px rgba(255, 204, 0, 0.15);
}
.footer-coffee-btn:hover { background: #E6B800; border-color: #CC9900; color: #000000; box-shadow: 0 4px 12px rgba(255, 204, 0, 0.3); }
.footer-support-btn:active, .footer-coffee-btn:active { transform: scale(0.97); }

@media (min-width: 600px) {
    .footer-content { flex-direction: row; justify-content: space-between; align-items: center; text-align: left; gap: 16px; }
    .footer-left { flex-direction: row; gap: 10px; }
    .footer-divider { display: inline; }
    .footer-right { width: auto; flex-direction: row; gap: 12px; }
    .footer-support-btn, .footer-coffee-btn { width: auto; }
}