/* =========================================
   1. VARIABLES & RESET
   ========================================= */
:root {
    --bg-body: #dfdfdf; /* Ganz leichtes Grau für den Hintergrund */
    --bg-card: #ffffff;
    --text-main: #111827; /* Fast Schwarz (Inter Standard) */
    --text-muted: #6b7280;
    --color-orange: #d35400; /* Burnt Orange */
    --color-green: #228b22;  /* Modernes Emerald Green */
    --color-border: #e5e7eb;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

body {
    background-color: var(--bg-body);
    color: var(--text-main);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    padding-bottom: 6rem; /* Der neue Grauraum (entspricht ca. 96px) */
}

a { 
    color: var(--text-main); 
    text-decoration: none; 
    transition: color 0.2s;
}

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

/* Spezielle Fonts */
.math-font {
    font-family: var(--font-mono);
    font-weight: 500;
}

/* =========================================
   2. MODERN NAVBAR (Glassmorphism)
   ========================================= */
.navbar-modern {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    padding: 0.8rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand-custom {
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: 1.2rem;
    color: #000;
    text-decoration: none;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Nav Links (Pills) */
.nav-link-modern {
    color: #666;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.nav-link-modern:hover {
    color: #000;
    background-color: #f3f4f6;
}

.nav-link-modern.active {
    background-color: var(--color-green);
    color: #fff !important; /* !important damit es nicht überschrieben wird */
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* XP Display oben rechts */
.xp-display {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    background-color: #fff;
    border: 1px solid var(--color-border);
    padding: 6px 12px;
    border-radius: 6px;
    color: var(--color-orange);
    display: flex;
    align-items: center;
    gap: 6px;
}

.user-avatar-small {
    width: 32px; 
    height: 32px; 
    background-color: #000; 
    color: #fff; 
    border-radius: 50%; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    font-weight: bold;
    font-size: 0.9rem;
}

/* =========================================
   3. COMPONENTS & CARDS
   ========================================= */

/* Challenge Card Styles */
.challenge-card {
    background-color: var(--bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.challenge-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--color-orange);
}

.card-header-custom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

/* Badges & Pills */
.cat-badge {
    border: 1px solid var(--color-border);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background: #fff;
}

.xp-badge {
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 6px;
    font-family: var(--font-mono);
}
.xp-badge-earned { background-color: rgba(16, 185, 129, 0.1); color: var(--color-green); }
.xp-badge-empty { color: var(--text-muted); }

/* Sterne Bewertung */
.star-rating {
    font-size: 1rem;
    letter-spacing: 1px;
    margin-right: 10px;
}
.star-filled { color: var(--color-orange); }
.star-empty { color: #e5e7eb; }

/* =========================================
   4. BUTTONS & ACTIONS
   ========================================= */

/* Haupt Action Button (Orange) */
.btn-action {
    background-color: var(--color-orange);
    color: #ffffff !important; /* Weiss erzwingen */
    border: none;
    font-weight: 600;
    border-radius: 8px;
    padding: 0.6rem 1.2rem;
    transition: all 0.2s ease;
}

.btn-action:hover {
    background-color: #a04000; /* Dunkleres Orange */
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(211, 84, 0, 0.2);
    color: #ffffff !important;
}

/* Utility: Grayscale für triviale Aufgaben */
.grayscale-mode { 
    opacity: 0.6; 
    filter: grayscale(100%); 
}
.grayscale-mode:hover { 
    opacity: 1; 
    filter: grayscale(0%); 
}

/* Utility: Action Text unten in der Karte */
.action-text {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.text-accent { color: var(--color-orange); }


/* =========================================
   5. DETAIL PAGE UTILITIES
   ========================================= */
.solution-box {
    background-color: #f8fafc;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
    color: var(--text-main);
}

.voting-widget {
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.stats-bar {
    background-color: #f9fafb;
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

/* =========================================
   6. HEADER CONTROLS (Index Page)
   ========================================= */

/* Segmented Switch (Active/Archive) */
.segmented-control {
    background-color: #f3f4f6;
    padding: 4px;
    border-radius: 8px;
    display: inline-flex;
    border: 1px solid rgba(0,0,0,0.05);
}

.segmented-item {
    padding: 6px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text-muted);
    transition: all 0.2s;
}
.segmented-item:hover { color: var(--text-main); }
.segmented-item.active {
    background-color: var(--color-orange);
    color: var(--bg-card);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Dropdown Filter Button */
.btn-filter {
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 8px;
    padding: 8px 16px;
    transition: all 0.2s;
}
.btn-filter:hover { background-color: #f9fafb; border-color: #d1d5db; }

/* Category Pills */
.cat-pill {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}
.cat-pill:hover { border-color: var(--color-orange); color: var(--color-orange); }
.cat-pill.active {
    background-color: var(--color-green); /* Dark Grey */
    color: #fff;
    border-color: var(--color-green);
}

/* =========================================
   7. PROGRESS BARS & HELPERS
   ========================================= */
.bg-action { background-color: var(--color-orange) !important; }
.bg-success { background-color: var(--color-green) !important; }
.text-action { color: var(--color-orange) !important; }

/* Leaderboard Highlight */
.current-user-row {
    background-color: #fff7ed !important; /* Orange Tint */
    font-weight: 600;
}
.current-user-row td:first-child {
    border-left: 4px solid var(--color-orange);
}

/* --- DETAIL VIEW FIXES --- */

/* Deaktiviert den Hover-Effekt für die Karte auf der Detail-Seite */
.no-hover {
    cursor: default !important; /* Normaler Mauszeiger, keine Hand */
}

.no-hover:hover {
    transform: none !important; /* Kein Anheben */
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05) !important; /* Schatten bleibt klein */
    border-color: var(--color-border) !important; /* Rand bleibt grau */
}

/* Category Pills - Active State Fix */
.cat-pill.active {
    background-color: var(--color-orange) !important; /* JETZT ORANGE */
    color: #ffffff !important;
    border-color: var(--color-orange) !important;
    box-shadow: 0 2px 5px rgba(211, 84, 0, 0.3); /* Leichter oranger Glow */
}

/* Hover State - auch Orange */
.cat-pill:hover { 
    border-color: var(--color-orange); 
    color: var(--color-orange); 
    background-color: rgba(211, 84, 0, 0.05); /* Ganz leicht oranger Hintergrund beim Hover */
}

/* --- LEADERBOARD TABS FIX --- */
/* Inaktive Tabs */
.nav-pills .nav-link {
    color: var(--text-muted);
    background-color: var(--bg-card);
    font-weight: 600;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.nav-pills .nav-link:hover {
    color: var(--color-orange);
    background-color: rgba(211, 84, 0, 0.05);
}

/* Aktive Tabs -> BURNT ORANGE */
.nav-pills .nav-link.active {
    background-color: var(--color-orange) !important;
    color: #ffffff !important;
    border-radius: 8px; /* Leicht abgerundet */
    box-shadow: 0 4px 6px rgba(211, 84, 0, 0.2);
}