@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #0b0e14;
    --bg-secondary: rgba(21, 26, 35, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --border-glass: rgba(255, 255, 255, 0.08);
    --text-main: #f1f1f1;
    --text-muted: #9aa0a6;
    --accent-primary: #4f46e5; /* İndigo / Mor (Daha koyu, kontrast için) */
    --accent-hover: #4338ca;
    --accent-success: #059669; /* Daha koyu yeşil kontrast için */
    --accent-danger: #dc2626; /* Daha koyu kırmızı kontrast için */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-image: radial-gradient(circle at top right, rgba(99, 102, 241, 0.15), transparent 40%),
                      radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.1), transparent 40%);
}

a {
    text-decoration: none;
    color: var(--accent-primary);
    transition: all 0.3s ease;
}
a:hover {
    color: var(--accent-hover);
}

/* Glassmorphism Container */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* Form Elements */
.input-group {
    margin-bottom: 1.5rem;
    position: relative;
    width: 100%;
}

.input-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.input-control {
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s;
}

.input-control:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-success {
    background: var(--accent-success);
    color: white;
}

.btn-success:hover {
    filter: brightness(1.1);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

/* Layout Classes */
.auth-wrapper {
    width: 100%;
    max-width: 400px;
    margin: auto;
    padding: 2rem;
}

/* Messages */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    border: 1px solid transparent;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.2);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: #6ee7b7;
    border-color: rgba(16, 185, 129, 0.2);
}

.logo-container {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-text {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.logo-span { color: var(--accent-primary); -webkit-text-fill-color: var(--accent-primary); }

.code-display {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 5px;
    text-align: center;
    color: var(--accent-success);
    margin: 2rem 0;
    text-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

/* Loader */
.loader {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* --- Index Header --- */
.main-header { width: 100%; padding: 1.5rem 2rem; box-sizing: border-box; max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
.main-header .header-inner { display: flex; align-items: center; }
.main-nav { display: flex; gap: 1.5rem; align-items: center; }
.main-nav a { color: var(--text-muted); font-weight: 500; text-decoration: none; transition: 0.3s; }
.main-nav a:hover { color: var(--accent-primary); }
.main-nav a.btn { color: white !important; }

/* --- Topbar Backend --- */
.topbar { display: flex; flex-direction: row; justify-content: space-between; align-items: center; margin-bottom: 2rem; background: var(--bg-glass); border: 1px solid var(--border-glass); padding: 15px 20px; border-radius: 12px; }
.topbar-header { display: flex; align-items: center; }
.topbar-nav { display: flex; gap: 1.5rem; align-items: center; }
.topbar-nav a { font-weight: 500; padding: 8px 12px; border-radius: 8px; transition: 0.3s; color: var(--text-main); text-decoration: none; }
.topbar-nav a:hover, .topbar-nav a.active { background: rgba(99,102,241,0.1); color: var(--accent-primary); }
.mobile-toggle { display: none; font-size: 1.5rem; color: var(--text-main); cursor: pointer; background:none; border:none; outline:none; }

@media (max-width: 900px) {
    .mobile-toggle { display: block; }
    
    .main-header { flex-direction: column; padding: 1rem !important; align-items: flex-start; }
    .main-header .header-inner { display: flex; justify-content: space-between; width: 100%; align-items: center; }
    .main-nav { display: none; width: 100%; flex-direction: column; gap: 0.5rem; margin-top: 1rem; align-items: flex-start; }
    .main-nav.active { display: flex; }
    .main-nav a { width: 100%; padding: 12px 10px; border-bottom: 1px solid var(--border-glass); }
    .main-nav a:last-child { border-bottom: none; }
    
    .topbar { flex-direction: column; align-items: flex-start; }
    .topbar-header { display: flex; justify-content: space-between; width: 100%; align-items: center; }
    .topbar-nav { display: none; flex-direction: column; width: 100%; margin-top: 1rem; gap: 0; }
    .topbar-nav.active { display: flex; }
    .topbar-nav a { display: block; width: 100%; text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--border-glass); border-radius: 0;}
    .topbar-nav a:last-child { border-bottom: none; }
}