:root {
    --admin-bg: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --input-bg: #f1f5f9;
    --input-border: #e2e8f0;
    --btn-primary: #0f172a;
    --btn-hover: #000000;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--admin-bg);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.admin-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 20px;
}

.admin-card {
    background: white;
    padding: 50px 40px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
    width: 100%;
    max-width: 400px;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

h2 {
    font-family: 'Playfair Display', serif;
    font-size: 28px;
    color: var(--text-main);
    margin: 0 0 5px 0;
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 400;
    margin-bottom: 35px;
}

.input-group {
    position: relative;
    width: 100%;
    margin-bottom: 20px;
    text-align: left;
}

.input-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-group svg {
    position: absolute;
    left: 16px;
    top: 42px;
    width: 18px;
    height: 18px;
    color: #94a3b8;
    pointer-events: none;
    z-index: 2;
    transition: 0.3s;
}

.input-group:focus-within svg {
    color: var(--text-main);
}

.input-group input {
    width: 100%;
    height: 50px;
    padding: 0 16px 0 48px;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 10px;
    font-size: 14px;
    color: var(--text-main);
    box-sizing: border-box;
    outline: none;
    transition: all 0.2s;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.input-group input::placeholder {
    color: #94a3b8;
}

.input-group input:focus {
    border-color: var(--text-main);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
}

.btn-admin {
    width: 100%;
    padding: 16px;
    background: var(--btn-primary);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
    margin-top: 10px;
    letter-spacing: 0.5px;
}

.btn-admin:hover {
    background: var(--btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.back-link {
    display: inline-block;
    margin-top: 30px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: 0.2s;
}

.back-link:hover {
    color: var(--text-main);
    border-bottom-color: var(--text-main);
}

.error-msg {
    color: #ef4444;
    background-color: #fef2f2;
    padding: 10px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 20px;
    border: 1px solid #fee2e2;
    text-align: left;
}