:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --surface: #1e293b;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --accent: #22d3ee;
    --error: #f43f5e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.15), transparent),
                radial-gradient(circle at bottom left, rgba(34, 211, 238, 0.1), transparent);
    z-index: -1;
}

.login-container {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 3rem;
    border-radius: 1.5rem;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.8s ease-out;
}

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

.header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.logo svg {
    width: 2rem;
    height: 2rem;
    color: var(--accent);
}

.logo span {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.header h1 {
    font-size: 1.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.header p {
    color: var(--text-dim);
    font-size: 0.875rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-dim);
    margin-bottom: 0.5rem;
}

.input-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.75rem;
    color: white;
    font-size: 1rem;
    transition: all 0.2s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.remember {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dim);
    cursor: pointer;
}

.forgot {
    color: var(--primary);
    text-decoration: none;
}

.forgot:hover {
    text-decoration: underline;
}

.login-btn {
    width: 100%;
    padding: 0.875rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.2s;
}

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

.login-btn svg {
    width: 1.25rem;
    height: 1.25rem;
    transition: transform 0.2s;
}

.login-btn:hover svg {
    transform: translateX(4px);
}

.footer {
    margin-top: 3rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1.5rem;
}

.footer p {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-bottom: 1rem;
}

.status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.4; }
    100% { opacity: 1; }
}