:root {
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --accent-blue: #2563eb;
    --accent-hover: #1d4ed8;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --error-red: #ef4444;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.login-container {
    width: 100%;
    max-width: 380px;
}

.login-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    text-align: center;
}

.logo-wrapper {
    margin-bottom: 1.5rem;
}

.logo-wrapper img {
    height: 48px;
    width: auto;
}

.login-card h1 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    letter-spacing: -0.5px;
}

.input-group {
    text-align: left;
    margin-bottom: 1.25rem;
}

.input-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-group input {
    width: 100%;
    padding: 0.85rem 1rem;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-group input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.btn-login {
    width: 100%;
    padding: 0.9rem;
    background-color: var(--accent-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    margin-top: 1rem;
    transition: background-color 0.2s ease, transform 0.1s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-login:hover {
    background-color: var(--accent-hover);
}

.btn-login:active {
    transform: scale(0.98);
}

.error-message {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error-red);
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 0.85rem;
    margin-top: 1.25rem;
}

.hidden {
    display: none !important;
}

/* Spinner latausanimaatio */
.btn-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Kielivalikon asettelu oikeaan yläkulmaan */
.lang-picker-wrapper {
    position: absolute;
    top: 20px;
    right: 20px;
}

.lang-select {
    background-color: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
}

.lang-select:focus {
    border-color: var(--accent-blue);
}