:root {
    --primary-color: #00796b;
    --secondary-color: #f0ad4e;
    --danger-color: #d9534f;
    --light-bg-color: #f8f9fa;
    --dark-text-color: #343a40;
    --light-text-color: #ffffff;
    --border-radius: 12px;
}
body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #e0f7fa 0%, #b2ebf2 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px 15px;
    box-sizing: border-box;
    color: var(--dark-text-color);
    position: relative;
}
.dark body {
    background: #000000 !important;
}

.main-wrapper { 
    width: 100%; 
    max-width: 900px; 
    position: relative;
    z-index: 1;
}

.login-card { 
    display: flex; 
    background-color: var(--light-text-color); 
    border-radius: 20px; 
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.1);
    overflow: hidden; 
    width: 100%; 
    margin: 0 auto;
    backdrop-filter: blur(10px);
    animation: slideUp 0.6s ease-out;
    position: relative;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-branding { 
    flex: 1; 
    background: linear-gradient(135deg, var(--primary-color) 0%, #005a4f 100%);
    color: var(--light-text-color); 
    padding: 60px 40px; 
    display: flex; 
    flex-direction: column; 
    justify-content: center;
    position: relative;
    overflow: hidden;
}
html.dark .login-branding,
.dark .login-branding {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%) !important;
    background-image: none !important;
    background-color: #0f172a !important;
    border: 1px solid #334155 !important;
}
html.dark .login-branding::before,
.dark .login-branding::before {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
}

.login-branding::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.site-title { 
    font-size: 3.5rem; 
    font-weight: 700; 
    margin: 0; 
    line-height: 1; 
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.tagline { 
    font-size: 1.2rem; 
    font-weight: 400; 
    opacity: 0.95; 
    margin-top: 10px; 
    position: relative;
    z-index: 1;
}

.slogan-divider { 
    height: 4px; 
    width: 60px; 
    background: linear-gradient(90deg, var(--secondary-color), #ffc107);
    margin: 25px 0; 
    border-radius: 2px;
    position: relative;
    z-index: 1;
    box-shadow: 0 2px 8px rgba(240, 173, 78, 0.4);
}

.call-to-action { 
    font-size: 1.1rem; 
    font-weight: 600; 
    position: relative;
    z-index: 1;
}

.login-form { 
    flex: 1; 
    padding: 50px 40px; 
    background: rgba(255, 255, 255, 0.98);
    position: relative;
}

/* Dark mode için login-form arka plan */
.dark .login-form,
html.dark .login-form {
    background: #1f2937 !important;
}

.login-form h2 { 
    font-size: 2rem; 
    font-weight: 700; 
    margin-top: 0; 
    margin-bottom: 30px; 
    background: linear-gradient(135deg, var(--primary-color), #005a4f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.input-group { 
    margin-bottom: 24px; 
    position: relative;
}

.input-group label { 
    display: block; 
    font-weight: 600; 
    margin-bottom: 8px; 
    font-size: 0.9rem; 
    color: #555;
    transition: color 0.3s ease;
}

.input-group:focus-within label {
    color: var(--primary-color);
}

/* Dark mode için label stilleri */
.dark .input-group label,
html.dark .input-group label {
    color: #e5e7eb !important;
}

.dark .input-group:focus-within label,
html.dark .input-group:focus-within label {
    color: #14b8a6 !important;
}

input[type="text"], 
input[type="email"], 
input[type="password"] { 
    width: 100%; 
    padding: 14px 18px; 
    border: 2px solid #e0e0e0; 
    border-radius: 12px; 
    font-size: 1rem; 
    font-family: 'Poppins', sans-serif; 
    transition: all 0.3s ease; 
    box-sizing: border-box;
    background: #fafafa;
    color: var(--dark-text-color);
}

input[type="text"]:focus, 
input[type="email"]:focus, 
input[type="password"]:focus { 
    outline: none; 
    border-color: var(--primary-color); 
    background: #fff;
    box-shadow: 0 0 0 4px rgba(0, 121, 107, 0.1), 0 4px 12px rgba(0, 121, 107, 0.15);
    transform: translateY(-2px);
}

/* Dark mode için input stilleri */
.dark input[type="text"],
.dark input[type="email"],
.dark input[type="password"],
html.dark input[type="text"],
html.dark input[type="email"],
html.dark input[type="password"] {
    background: #374151 !important;
    color: #f3f4f6 !important;
    border-color: #4b5563 !important;
}

.dark input[type="text"]:focus,
.dark input[type="email"]:focus,
.dark input[type="password"]:focus,
html.dark input[type="text"]:focus,
html.dark input[type="email"]:focus,
html.dark input[type="password"]:focus {
    background: #374151 !important;
    color: #f3f4f6 !important;
    border-color: #14b8a6 !important;
    box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.1), 0 4px 12px rgba(20, 184, 166, 0.15) !important;
}

/* Dark mode için placeholder stilleri */
.dark input[type="text"]::placeholder,
.dark input[type="email"]::placeholder,
.dark input[type="password"]::placeholder,
html.dark input[type="text"]::placeholder,
html.dark input[type="email"]::placeholder,
html.dark input[type="password"]::placeholder {
    color: #9ca3af !important;
    opacity: 1;
}
.login-button,
button.login-button,
.login-form .login-button,
form .login-button { 
    width: 100% !important; 
    padding: 16px 24px !important; 
    border: 2px solid var(--primary-color) !important; 
    border-radius: 12px !important; 
    background: transparent !important;
    background-color: transparent !important;
    background-image: none !important;
    color: var(--primary-color) !important; 
    font-size: 1.1rem !important; 
    font-weight: 600 !important; 
    cursor: pointer !important; 
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important; 
    font-family: 'Poppins', sans-serif !important; 
    position: relative !important;
    overflow: hidden !important;
    box-shadow: 0 4px 12px rgba(0, 121, 107, 0.15) !important;
    letter-spacing: 0.5px;
}

.login-button-small {
    width: auto !important;
    padding: 10px 24px !important;
    font-size: 0.95rem !important;
    display: inline-block !important;
    border-radius: 8px !important;
    letter-spacing: 0.3px !important;
    margin-right: 0 !important;
}

/* Form başlık sağ tarafı - Kayıt Ol/Giriş Yap butonu için */
.form-header-right {
    position: absolute;
    top: 20px;
    right: 40px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    z-index: 10;
    gap: 8px;
}

/* Dark mode toggle butonu */
.dark-mode-toggle-btn {
    color: #374151 !important;
}

.dark-mode-toggle-btn i {
    color: #374151 !important;
}

.dark .dark-mode-toggle-btn,
html.dark .dark-mode-toggle-btn {
    color: #d1d5db !important;
}

.dark .dark-mode-toggle-btn i,
html.dark .dark-mode-toggle-btn i {
    color: #d1d5db !important;
}

.form-messages {
    margin-top: 50px;
    margin-bottom: 20px;
}

.form-messages .message {
    margin-bottom: 16px;
}

.form-messages .message:last-child {
    margin-bottom: 0;
}

/* Form butonlarını sağa hizalama */
.form-actions-right {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
    flex-wrap: wrap;
}
.login-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}
.login-button:hover {
    background: linear-gradient(135deg, var(--primary-color), #005a4f) !important;
    background-color: var(--primary-color) !important;
    color: var(--light-text-color) !important;
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 25px rgba(0, 121, 107, 0.4), 0 0 0 4px rgba(0, 121, 107, 0.1) !important;
    border-color: var(--primary-color) !important;
}
.login-button:hover::before {
    left: 100%;
}
.login-button:active {
    transform: translateY(0);
}
.message.error, 
.message.success { 
    padding: 16px 20px; 
    margin-bottom: 0; 
    border-radius: 12px; 
    border: 2px solid transparent; 
    text-align: left;
    font-weight: 500;
    animation: slideIn 0.4s ease-out;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.message.error { 
    color: #721c24; 
    background: linear-gradient(135deg, #fee2e2, #fecaca);
    border-color: #f87171; 
}

.message.success { 
    color: #155724; 
    background: linear-gradient(135deg, #d1fae5, #a7f3d0);
    border-color: #34d399; 
}
.register-link { 
    text-align: center; 
    margin-top: 25px; 
}

/* Giriş ve Kayıt sayfalarındaki şık buton linkleri - ana butonla aynı stil */
.register-link-small {
    display: inline-block !important;
    font-size: 0.95rem !important;
    color: var(--primary-color) !important;
    text-decoration: none !important;
    font-weight: 600 !important;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    position: relative !important;
    padding: 10px 24px !important;
    border-radius: 8px !important;
    letter-spacing: 0.3px !important;
    border: 2px solid var(--primary-color) !important;
    background: transparent !important;
    background-color: transparent !important;
    background-image: none !important;
    box-shadow: 0 4px 12px rgba(0, 121, 107, 0.15) !important;
    font-family: 'Poppins', sans-serif !important;
    overflow: hidden !important;
    cursor: pointer !important;
}

.register-link-small::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.register-link-small:hover {
    background: linear-gradient(135deg, var(--primary-color), #005a4f) !important;
    background-color: var(--primary-color) !important;
    color: var(--light-text-color) !important;
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 25px rgba(0, 121, 107, 0.4), 0 0 0 4px rgba(0, 121, 107, 0.1) !important;
    border-color: var(--primary-color) !important;
}

.register-link-small:hover::before {
    left: 100%;
}

.register-link-small:active {
    transform: translateY(0);
}

.register-link a {
    display: inline-block !important;
    padding: 16px 40px !important;
    background: transparent !important;
    background-color: transparent !important;
    color: var(--primary-color) !important;
    text-decoration: none !important;
    border: 2px solid var(--primary-color) !important;
    border-radius: 12px !important;
    font-weight: 600 !important;
    font-size: 1.1rem !important;
    font-family: 'Poppins', sans-serif !important;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    cursor: pointer !important;
    width: 100% !important;
    text-align: center !important;
    box-sizing: border-box !important;
    position: relative !important;
    overflow: hidden !important;
    box-shadow: 0 4px 12px rgba(0, 121, 107, 0.15) !important;
    letter-spacing: 0.5px;
}
.register-link a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}
.register-link a:hover {
    background: linear-gradient(135deg, var(--primary-color), #005a4f) !important;
    background-color: var(--primary-color) !important;
    color: var(--light-text-color) !important;
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 25px rgba(0, 121, 107, 0.4), 0 0 0 4px rgba(0, 121, 107, 0.1) !important;
    border-color: var(--primary-color) !important;
}
.register-link a:hover::before {
    left: 100%;
}
.register-link a:active {
    transform: translateY(0);
}

/* Kayıt sayfasındaki "Giriş Yap" linki için özel stil */
.register-link a[href="giris.php"] {
    display: inline !important;
    padding: 0 !important;
    background: none !important;
    background-color: transparent !important;
    border: none !important;
    color: var(--primary-color) !important;
    text-decoration: none !important;
    font-weight: 600 !important;
    font-size: inherit !important;
    transition: all 0.3s ease !important;
    cursor: pointer !important;
    width: auto !important;
    box-shadow: none !important;
    position: relative !important;
    overflow: visible !important;
}

.register-link a[href="giris.php"]:hover {
    color: #005a4f !important;
    text-decoration: underline !important;
    transform: none !important;
    box-shadow: none !important;
}

/* Şifremi Unuttum linki */
.forgot-password-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    position: relative;
    display: inline-block;
}

.forgot-password-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.forgot-password-link:hover {
    color: #00897b;
    transform: translateX(2px);
}

.forgot-password-link:hover::after {
    width: 100%;
}

.forgot-password-link:active {
    transform: translateX(0);
}

/* === YENİ EKLENDİ: Oyun Modu Tanıtımları === */
.game-modes-preview {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}
.game-modes-preview h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--light-text-color);
    margin: 0 0 15px 0;
    text-align: center;
}
.game-modes-preview .mode-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    opacity: 0.9;
}
.game-modes-preview .mode-item i {
    font-size: 1.2em;
    color: var(--secondary-color);
    width: 20px;
    text-align: center;
}
.game-modes-preview .mode-item span {
    font-size: 0.9em;
    line-height: 1.4;
}
/* === EK: explanation-section için mode-item stilleri === */
.explanation-section .mode-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 15px;
}
.explanation-section .mode-item i {
    margin-top: 5px;
    font-size: 1.2em;
    color: var(--primary-color);
    width: 28px;
    text-align: center;
    flex-shrink: 0;
}
.explanation-section .mode-item span {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #555;
    display: inline-block;
}

/* Dark mode için explanation-section .mode-item (branding-modes dışındaki) */
.dark .explanation-section .mode-item span,
html.dark .explanation-section .mode-item span {
    color: #d1d5db !important;
}

.dark .explanation-section .mode-item span b,
html.dark .explanation-section .mode-item span b {
    color: #f3f4f6 !important;
}
.explanation-section .mode-item a {
    color: inherit;
    text-decoration: none;
    font-weight: 600;
}
.explanation-section .mode-item a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}
/* === YENİ EKLENDİ SONU === */

.explanation-card {
    background-color: var(--light-text-color);
    border-radius: var(--border-radius);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    width: 100%;
    margin: 50px auto 0;
    padding: 30px 40px;
    box-sizing: border-box;
    text-align: left;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

/* Dark mode için explanation-card */
.dark .explanation-card,
html.dark .explanation-card {
    background-color: #1f2937 !important;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5) !important;
}
.explanation-section h2 { font-size: 1.5rem; font-weight: 600; margin-top: 0; margin-bottom: 15px; color: var(--primary-color); }
.explanation-section p, .explanation-section li { font-size: 0.95rem; line-height: 1.6; color: #555; }

/* Dark mode için explanation-section metinleri */
.dark .explanation-section h2,
html.dark .explanation-section h2 {
    color: #14b8a6 !important;
}

.dark .explanation-section p,
.dark .explanation-section li,
html.dark .explanation-section p,
html.dark .explanation-section li {
    color: #d1d5db !important;
}
.how-to-play-list { padding-left: 20px; list-style-type: decimal; margin: 0; }
.how-to-play-list li { margin-bottom: 10px; }

.leaderboard-login { list-style: none; padding-left: 0; margin-top: 15px; }
.leaderboard-login li { display: flex; align-items: center; padding: 10px 15px; border-radius: 8px; background-color: #f8f9fa; margin-bottom: 8px; font-size: 0.95em; }
.leaderboard-login .leaderboard-rank { font-weight: bold; color: #aaa; margin-right: 15px; }
.leaderboard-login .leaderboard-name { font-weight: 600; flex-grow: 1; }
.leaderboard-login .leaderboard-score { font-weight: bold; color: var(--primary-color); }
.leaderboard-login .no-leader, .explanation-section .no-leader { font-style: italic; color: #888; text-align: center; padding: 20px; background-color: #f8f9fa; border-radius: 8px;}

/* Dark mode için leaderboard */
.dark .leaderboard-login li,
html.dark .leaderboard-login li {
    background-color: #374151 !important;
    border: 1px solid #4b5563 !important;
    color: #e5e7eb !important;
}

.dark .leaderboard-login .leaderboard-rank,
html.dark .leaderboard-login .leaderboard-rank {
    color: #9ca3af !important;
}

.dark .leaderboard-login .leaderboard-name,
html.dark .leaderboard-login .leaderboard-name {
    color: #f3f4f6 !important;
}

.dark .leaderboard-login .leaderboard-score,
html.dark .leaderboard-login .leaderboard-score {
    color: #14b8a6 !important;
}

.dark .leaderboard-login .no-leader,
.dark .explanation-section .no-leader,
html.dark .leaderboard-login .no-leader,
html.dark .explanation-section .no-leader {
    color: #9ca3af !important;
    background-color: #374151 !important;
    border: 1px solid #4b5563 !important;
}

.site-footer {
    width: 100%;
    max-width: 900px;
    padding: 20px 0;
    margin-top: 30px;
    text-align: center;
    font-size: 0.9em;
    color: #6c757d;
}
.footer-links a {
    color: #6c757d;
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.2s;
}
.footer-links a:hover {
    color: var(--primary-color);
}
.footer-copyright {
    margin-top: 8px;
    font-size: 0.85em;
}

@media (max-width: 800px) {
    body { 
        justify-content: flex-start;
    }
    .login-card { 
        flex-direction: column; 
    }
    .login-branding { 
        padding: 40px 25px; 
        text-align: center; 
    }
    .site-title { 
        font-size: 2.8rem; 
    }
    .slogan-divider { 
        margin: 20px auto; 
    }
    .login-form { 
        padding: 40px 25px; 
    }
    .form-header-right {
        top: 15px;
        right: 25px;
    }
    .form-messages {
        margin-top: 45px;
    }
    .explanation-card { 
        padding: 30px 25px; 
        grid-template-columns: 1fr;
        gap: 30px;
        margin-top: 40px;
    }
    .footer-links a {
        display: block;
        margin-bottom: 8px;
    }

    /* Mobil için mode-item ayarları */
    .explanation-section .mode-item {
        gap: 8px;
    }
    .explanation-section .mode-item i {
        font-size: 1.1em;
        width: 24px;
    }
    .explanation-section .mode-item span {
        font-size: 0.92rem;
    }
}

/* === Branding toggle (aşağıda açılır) === */
.toggle-modes {
    display: block;
    width: 100%;
    margin-top: 0;
    margin-bottom: 0;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--primary-color), #005a4f);
    color: var(--light-text-color);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.3px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    text-align: center;
}
.toggle-modes:hover {
    background: linear-gradient(135deg, #00897b, var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}
.toggle-modes:focus { outline: none; box-shadow: 0 0 0 4px rgba(0,121,107,0.2); }

/* Dark mode için toggle-modes butonu */
.dark .toggle-modes,
html.dark .toggle-modes {
    background: linear-gradient(135deg, #0f766e 0%, #14b8a6 50%, #0f766e 100%) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.4), 0 0 0 1px rgba(20, 184, 166, 0.2) !important;
    border: 1px solid rgba(20, 184, 166, 0.3) !important;
}

.dark .toggle-modes:hover,
html.dark .toggle-modes:hover {
    background: linear-gradient(135deg, #14b8a6 0%, #2dd4bf 50%, #14b8a6 100%) !important;
    box-shadow: 0 6px 20px rgba(20, 184, 166, 0.5), 0 0 0 2px rgba(20, 184, 166, 0.3) !important;
    transform: translateY(-2px) !important;
    border-color: rgba(20, 184, 166, 0.5) !important;
}

.dark .toggle-modes:active,
html.dark .toggle-modes:active {
    transform: translateY(0) !important;
}

.dark .toggle-modes:focus,
html.dark .toggle-modes:focus {
    outline: none !important;
    box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.3), 0 4px 12px rgba(20, 184, 166, 0.4) !important;
}
.branding-modes {
    margin-top: 12px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.3s ease, margin-top 0.3s ease;
    opacity: 0;
}
.branding-modes.open {
    max-height: 320px; /* 1v1 kartı için yeterli */
    opacity: 1;
    margin-top: 12px;
}
/* Beyaz alan için mode-item stilleri */
.explanation-section .branding-modes .mode-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 11px;
    margin-bottom: 5px;
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    color: var(--dark-text-color);
    transition: all 0.3s ease;
}
.explanation-section .branding-modes .mode-item:hover {
    background: #f0f0f0;
    border-color: var(--primary-color);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.explanation-section .branding-modes .mode-item i {
    font-size: 1.15em;
    color: var(--secondary-color);
    width: 22px;
    text-align: center;
    flex-shrink: 0;
    margin-top: 0;
}
.explanation-section .branding-modes .mode-item span {
    color: var(--dark-text-color);
    font-size: 0.88rem;
    line-height: 1.35;
    font-weight: 400;
    flex: 1;
}
.explanation-section .branding-modes .mode-item span b {
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.1px;
    display: block;
    margin-bottom: 2px;
    color: var(--dark-text-color);
}
.explanation-section .branding-modes .mode-item a {
    color: var(--primary-color);
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s ease;
}
.explanation-section .branding-modes .mode-item a:hover {
    color: #e91e63;
    text-decoration: underline;
}

/* Dark mode için mode-item kartları */
.dark .explanation-section .branding-modes .mode-item,
html.dark .explanation-section .branding-modes .mode-item {
    background: #374151 !important;
    border-color: #4b5563 !important;
    color: #e5e7eb !important;
}

.dark .explanation-section .branding-modes .mode-item:hover,
html.dark .explanation-section .branding-modes .mode-item:hover {
    background: #4b5563 !important;
    border-color: #14b8a6 !important;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.2) !important;
}

.dark .explanation-section .branding-modes .mode-item span,
html.dark .explanation-section .branding-modes .mode-item span {
    color: #d1d5db !important;
}

.dark .explanation-section .branding-modes .mode-item span b,
html.dark .explanation-section .branding-modes .mode-item span b {
    color: #f3f4f6 !important;
}

.dark .explanation-section .branding-modes .mode-item i,
html.dark .explanation-section .branding-modes .mode-item i {
    color: #fbbf24 !important;
}

.dark .explanation-section .branding-modes .mode-item a,
html.dark .explanation-section .branding-modes .mode-item a {
    color: #14b8a6 !important;
}

.dark .explanation-section .branding-modes .mode-item a:hover,
html.dark .explanation-section .branding-modes .mode-item a:hover {
    color: #34d399 !important;
}
/* Küçük ekranlarda branding içeriği daha sıkı */
@media (max-width: 800px) {
    .toggle-modes {
        padding: 10px 16px;
        font-size: 0.95rem;
        margin-top: 0;
    }
    .branding-modes.open {
        max-height: 300px;
        margin-top: 10px;
    }
    .explanation-section .branding-modes .mode-item {
        padding: 8px 10px;
        gap: 8px;
        margin-bottom: 4px;
    }
    .explanation-section .branding-modes .mode-item i {
        font-size: 1.05em;
        width: 20px;
    }
    .explanation-section .branding-modes .mode-item span {
        font-size: 0.83rem;
        line-height: 1.3;
    }
    .explanation-section .branding-modes .mode-item span b {
        font-size: 0.85rem;
        margin-bottom: 1px;
    }
}

/* === YENİ EKLENDİ: LİDERLİK TABLOSU SEKMELERİ === */
.leaderboard-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 10px;
    border-bottom: 2px solid #eee;
}

.tab-link {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 0.9em;
    padding: 8px 15px;
    cursor: pointer;
    border: none;
    background-color: transparent;
    color: var(--dark-text-color);
    opacity: 0.7;
    border-bottom: 3px solid transparent;
    transition: all 0.2s ease;
}

.tab-link:hover {
    background-color: #f8f9fa;
    opacity: 1;
}

.tab-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    opacity: 1;
}

.tab-content {
    display: none; /* Aktif olmayan tüm içerikleri gizle */
}

.tab-content.active {
    display: block; /* Sadece 'active' sınıfına sahip olanı göster */
}

/* Dark mode için tab-link */
.dark .tab-link,
html.dark .tab-link {
    color: #d1d5db !important;
}

.dark .tab-link:hover,
html.dark .tab-link:hover {
    background-color: #374151 !important;
    color: #f3f4f6 !important;
}

.dark .tab-link.active,
html.dark .tab-link.active {
    color: #14b8a6 !important;
    border-bottom-color: #14b8a6 !important;
}

.dark .leaderboard-tabs,
html.dark .leaderboard-tabs {
    border-bottom-color: #4b5563 !important;
}