:root {
    --primary-bg: #f3f4f6;
    --sidebar-bg: #ffffff;
    --text-main: #1e293b;
    --text-light: #64748b;
    --accent-teal: #0ea5e9;
    --accent-indigo: #6366f1;
    --border-color: #e2e8f0;
}

* { box-sizing: border-box; outline: none; text-decoration: none; }

body {
    background-color: var(--primary-bg);
    font-family: 'Vazirmatn', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    direction: rtl;
}

.auth-container {
    background: var(--sidebar-bg);
    width: 100%;
    max-width: 400px;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    text-align: center;
    border: 1px solid var(--border-color);
}

.auth-icon {
    width: 60px;
    height: 60px;
    background: #e0e7ff;
    color: var(--accent-indigo);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 20px auto;
}

h2 {
    color: var(--text-main);
    margin-bottom: 10px;
    font-weight: 800;
}

p.subtitle {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 30px;
}

.input-group {
    position: relative;
    margin-bottom: 20px;
    text-align: right;
}

.input-group i {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    transition: 0.3s;
}

.input-group input {
    width: 100%;
    padding: 14px 45px 14px 15px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-family: 'Vazirmatn', sans-serif;
    font-size: 14px;
    transition: 0.3s;
    background: #f8fafc;
}

.input-group input:focus {
    border-color: var(--accent-indigo);
    background: #fff;
}

.input-group input:focus + i {
    color: var(--accent-indigo);
}

button {
    width: 100%;
    padding: 14px;
    background: var(--accent-indigo);
    color: white;
    border: none;
    border-radius: 12px;
    font-family: 'Vazirmatn', sans-serif;
    font-weight: 700;
    font-size: 15px;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

button:hover {
    background: #4f46e5;
    transform: translateY(-2px);
}