/* Modern Auth Tasarımı */
:root {
    --primary-color: #FFD200; /* Meşhur Sarı */
    --primary-hover: #e6bd00;
    --input-bg: #ffffff;
    --card-shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --input-bg: #2d2d2d;
    --card-shadow: rgba(0, 0, 0, 0.5);
}

body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--bg-color); /* index.php'deki ana arka plan rengimiz */
    transition: all 0.3s ease;
}

.auth-card {
    background: var(--container-bg);
    width: 100%;
    max-width: 400px;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 15px 35px var(--card-shadow);
    border: 1px solid var(--border-color);
    text-align: center;
}

.auth-card h2 {
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-color);
}

/* Modern Inputlar */
.input-group {
    position: relative;
    margin-bottom: 20px;
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.8;
}

.input-group input {
    width: 100%;
    padding: 12px 15px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 16px;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.input-group input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 8px rgba(255, 210, 0, 0.2);
}

/* Sarı Buton */
.btn-submit {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 10px;
    background: var(--primary-color);
    color: #333;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
    margin-top: 10px;
}

.btn-submit:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-submit:active {
    transform: translateY(0);
}

/* Linkler */
.auth-footer {
    margin-top: 25px;
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.7;
}

.auth-footer a {
    color: var(--sidebar-text);
    text-decoration: none;
    font-weight: bold;
}

.auth-footer a:hover {
    text-decoration: underline;
}