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

:root {
    --teal: #008080;
    --teal-dark: #006666;
    --teal-light: #e6f4f4;
    --green: #008000;
    --green-dark: #006600;
    --green-light: #e6f4e6;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 440px;
    margin: auto;
}

.login-card {
    background: var(--white);
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.6s ease-out;
}

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

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

.login-header .logo {
    max-width: 180px;
    height: auto;
    margin-bottom: 16px;
}

.login-header h1 {
    font-size: 28px;
    color: var(--gray-900);
    font-weight: 700;
    margin-bottom: 4px;
}

.login-header .subtitle {
    color: var(--gray-500);
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.login-form label i {
    color: var(--teal);
    margin-right: 8px;
}

.login-form input[type="email"],
.login-form input[type="password"],
.login-form input[type="text"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s;
    background: var(--gray-50);
}

.login-form input:focus {
    outline: none;
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(0, 128, 128, 0.1);
    background: var(--white);
}

.password-input-wrapper {
    position: relative;
}

.password-input-wrapper input {
    padding-right: 48px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: 4px;
}

.toggle-password:hover {
    color: var(--teal);
}

.otp-input-wrapper {
    position: relative;
}

.otp-input-wrapper input {
    padding-right: 70px;
}

.otp-timer {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-500);
    font-size: 14px;
    font-weight: 600;
}

.resend-otp {
    margin-top: 8px;
    background: none;
    border: none;
    color: var(--teal);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    padding: 4px 8px;
}

.resend-otp:hover {
    color: var(--teal-dark);
    text-decoration: underline;
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 128, 128, 0.3);
}

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

.message {
    margin-top: 16px;
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    display: none;
}

.message.error {
    display: block;
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.message.success {
    display: block;
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

.message.info {
    display: block;
    background: #eff6ff;
    color: #2563eb;
    border: 1px solid #bfdbfe;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    color: var(--gray-400);
    font-size: 12px;
}

@media (max-width: 480px) {
    .login-card {
        padding: 24px 20px;
    }
    
    .login-header h1 {
        font-size: 24px;
    }
}