:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --bg-color: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #cbd5e1;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

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

/* Dynamic animated background */
.background-animation {
    position: absolute;
    width: 150vw;
    height: 150vh;
    background: radial-gradient(circle at 50% 50%, rgba(79, 70, 229, 0.15), transparent 60%),
                radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.15), transparent 50%);
    animation: drift 20s infinite alternate ease-in-out;
    z-index: 0;
}

@keyframes drift {
    0% { transform: translate(-5%, -5%) scale(1); }
    100% { transform: translate(5%, 5%) scale(1.1); }
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px 30px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.logo-area {
    background: rgba(79, 70, 229, 0.2);
    padding: 16px;
    border-radius: 50%;
    margin-bottom: 20px;
    color: #818cf8;
    border: 1px solid rgba(129, 140, 248, 0.2);
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 8px;
    text-align: center;
    line-height: 1.2;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 30px;
    text-align: center;
}

form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

input {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 14px 16px;
    color: white;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

input:focus {
    border-color: #818cf8;
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.login-button {
    background: linear-gradient(135deg, var(--primary-color), #818cf8);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 16px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -10px rgba(79, 70, 229, 0.5);
}

.login-button:active {
    transform: translateY(0);
}

.footer-links {
    margin-top: 30px;
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    gap: 10px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}