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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --success: #10b981;
    --error: #ef4444;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-light: #334155;
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: var(--text);
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

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

.auth-card {
    background: var(--surface);
    border-radius: 24px;
    padding: 48px 40px;
    box-shadow:
        0 20px 25px -5px var(--shadow),
        0 8px 10px -6px var(--shadow);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.auth-card:hover {
    transform: translateY(-2px);
    box-shadow:
        0 25px 30px -5px var(--shadow),
        0 12px 15px -6px var(--shadow);
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: bold;
    color: white;
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
}

.auth-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.auth-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.auth-subtitle a {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.auth-subtitle a:hover {
    color: var(--primary);
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 8px;
}

.form-input,
.form-select {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    color: var(--text);
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: 12px;
    outline: none;
    transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-input::placeholder {
    color: var(--text-secondary);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.btn {
    width: 100%;
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn:active {
    transform: translateY(0);
}

.alert {
    padding: 14px 16px;
    border-radius: 12px;
    margin-bottom: 24px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 14px;
    line-height: 1.5;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #6ee7b7;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.verification-image {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.verification-image svg {
    width: 40px;
    height: 40px;
    color: var(--primary-light);
}

.verification-code-input {
    width: 100%;
    padding: 16px;
    font-size: 24px;
    font-weight: 600;
    text-align: center;
    letter-spacing: 8px;
    color: var(--text);
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: 12px;
    outline: none;
    transition: all 0.2s ease;
}

.verification-code-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.helper-text {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    margin: 16px 0;
}

.helper-text a {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.helper-text a:hover {
    color: var(--primary);
}

@media (max-width: 480px) {
    .auth-card {
        padding: 32px 24px;
        border-radius: 20px;
    }

    .auth-title {
        font-size: 24px;
    }

    .auth-logo {
        width: 56px;
        height: 56px;
        font-size: 28px;
    }

    .verification-code-input {
        font-size: 20px;
        letter-spacing: 6px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}