/* General */
body {
    background: radial-gradient(circle at top left, #1E293B, #0F172A);
    color: #E2E8F0;
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
}

header {
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

header h1 {
    font-weight: 700;
    letter-spacing: 1px;
    color: #FFFFFF;
}

/* Layout */
main.container {
    margin-top: 5vh;
}

h2 {
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 1rem;
}

p {
    color: #CBD5E1;
}

/* Cards */
section.cta, section.auth-options {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    transition: 0.3s ease;
}

section.cta:hover, section.auth-options:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

/* Inputs */
.form-control {
    background-color: rgba(255,255,255,0.1);
    border: none;
    color: #E2E8F0;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    transition: background-color 0.3s;
}

.form-control::placeholder {
    color: #94A3B8;
}

.form-control:focus {
    background-color: rgba(255,255,255,0.15);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.3);
}

/* Buttons */
.btn-success {
    background: linear-gradient(135deg, #10B981, #059669);
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    padding: 0.75rem 1.25rem;
    width: 100%;
}

.btn-success:hover {
    background: linear-gradient(135deg, #34D399, #047857);
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, #3B82F6, #1D4ED8);
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    padding: 0.75rem 1.25rem;
    width: 100%;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #60A5FA, #2563EB);
    transform: translateY(-1px);
}

/* Responsive */
@media (max-width: 768px) {
    main.container {
        text-align: center;
    }
    section.cta, section.auth-options {
        margin-top: 2rem;
    }
}