:root {
    --c-bg: #E7E3E2;
    --c-surface: rgba(255,255,255,0.7);
    --c-text: #2F1D1E;
    --c-muted: #A29FA3;
    --c-accent: #9A2A53;
    --c-accent-2: #325568;
    --radius: 16px;
    --shadow: 0 6px 28px rgba(0,0,0,.15);
}

[data-theme="dark"] {
    --c-bg: #1c191a;
    --c-surface: rgba(36,33,36,0.7);
    --c-text: #E7E3E2;
    --c-muted: #A29FA3;
    --shadow: 0 8px 32px rgba(0,0,0,.5);
}

body {
    margin: 0;
    font-family: "Segoe UI", system-ui, sans-serif;
    background: var(--c-bg) center/cover fixed no-repeat;
    color: var(--c-text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 1rem;
}

.login-card {
    background: var(--c-surface);
    backdrop-filter: blur(12px);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    max-width: 360px;
    width: 100%;
    text-align: center;
    animation: fadeIn 0.6s ease;
}

.logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: url("/img/data/icon.png") center/contain no-repeat;
    border-radius: 12px;
}

.title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.subtitle {
    margin: 0 0 1.5rem;
    font-size: 0.9rem;
    color: var(--c-muted);
}

form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

label {
    text-align: left;
    font-size: 0.9rem;
    font-weight: 500;
}

input[type="text"],
input[type="password"] {
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius);
    border: 1px solid var(--c-muted);
    background: rgba(255,255,255,0.4);
    color: var(--c-text);
    transition: border-color 0.3s, box-shadow 0.3s;
}

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="password"] {
    background: rgba(0,0,0,0.2);
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px rgba(154,42,83,0.25);
}

.btn {
    padding: 0.75rem;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
    color: #fff;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.3s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,.2);
}

#errorMessage {
    display: none;
    margin-bottom: 0.5rem;
    color: var(--c-accent);
    font-size: 0.85rem;
    animation: shake 0.4s ease;
}

@keyframes fadeIn {
    from {opacity:0; transform: translateY(20px);}
    to {opacity:1; transform: translateY(0);}
}

@keyframes shake {
    10%, 90% { transform: translateX(-2px); }
    20%, 80% { transform: translateX(4px); }
    30%, 50%, 70% { transform: translateX(-6px); }
    40%, 60% { transform: translateX(6px); }
}