/* ============================================
   UEFA THEME — GLOBAL STİLLER & TASARIM SİSTEMİ
   ============================================ */

:root {
    --bg-dark: #050a18;
    --bg-card: #0c152b;
    --border-color: rgba(0, 229, 255, 0.15);
    --border-hover: rgba(0, 229, 255, 0.4);
    
    --uefa-blue: #002e6e;
    --uefa-cyan: #00e5ff;
    --uefa-gold: #d4af37;
    --uefa-gold-light: #ffe87c;
    
    --text-white: #ffffff;
    --text-muted: #7a8fa6;
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    font-family: 'Outfit', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Navigasyon / Sekme Çubuğu */
.tab-nav {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    background: rgba(12, 21, 43, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 24px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.tab-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.tab-btn:hover {
    color: var(--text-white);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: var(--uefa-cyan);
    background: rgba(0, 229, 255, 0.08);
    border-color: var(--border-color);
}

.tab-btn-popup {
    margin-left: auto;
    border: 1px solid var(--uefa-gold);
    color: var(--uefa-gold);
}

.tab-btn-popup:hover {
    background: rgba(212, 175, 55, 0.1);
    color: var(--uefa-gold-light);
}

/* Sekme İçerikleri */
.tab-content {
    display: none;
    opacity: 0;
    transition: opacity 0.35s ease;
}

.tab-content.active {
    display: block;
    opacity: 1;
}

/* Buton Stilleri */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    border-radius: 10px;
    padding: 10px 20px;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.btn-primary {
    background: linear-gradient(135deg, #0072ff 0%, #00e5ff 100%);
    color: #000;
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(0, 229, 255, 0.5);
}

.btn-gold {
    background: linear-gradient(135deg, #b8860b 0%, #d4af37 50%, #ffe87c 100%);
    color: #000;
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.3);
}

.btn-gold:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(212, 175, 55, 0.5);
}

.btn-warning {
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--uefa-gold);
    color: var(--uefa-gold);
}

.btn-warning:hover:not(:disabled) {
    background: var(--uefa-gold);
    color: #000;
}

.btn-danger {
    background: rgba(255, 76, 76, 0.1);
    border: 1px solid #ff4c4c;
    color: #ff4c4c;
}

.btn-danger:hover:not(:disabled) {
    background: #ff4c4c;
    color: #fff;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 229, 255, 0.25);
}