@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #2c5364;
    --primary-dark: #203a43;
    --primary-light: #3a6b7c;
    --gradient: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    --accent: #00c9ff;
    --white: #ffffff;
    --gray-light: #f8f9fa;
    --gray: #6c757d;
    --shadow: 0 20px 40px rgba(0,0,0,0.1);
    --shadow-lg: 0 25px 50px rgba(0,0,0,0.15);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    overflow: hidden;
    position: relative;
}

/* Background Animation */
.bg-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.floating-shape {
    position: absolute;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

.auth-container {
    width: 100%;
    max-width: 440px;
    padding: 20px;
}

.auth-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    padding: 50px 40px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.2);
    animation: slideUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

    .auth-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, var(--accent), var(--primary));
    }

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(60px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.auth-logo {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

.logo-container {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 20px;
    margin-bottom: 20px;
    box-shadow: 0 10px 20px rgba(44, 83, 100, 0.3);
    position: relative;
    overflow: hidden;
}

    .logo-container::before {
        content: '';
        position: absolute;
        width: 150%;
        height: 150%;
        background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
        transform: rotate(45deg);
        animation: shine 3s infinite;
    }

@keyframes shine {
    0% {
        transform: translateX(-100%) rotate(45deg);
    }

    100% {
        transform: translateX(100%) rotate(45deg);
    }
}

.logo-icon {
    font-size: 32px;
    font-weight: bold;
    color: white;
    position: relative;
    z-index: 2;
}

.auth-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-subtitle {
    text-align: center;
    color: var(--gray);
    font-size: 14px;
    font-weight: 400;
    margin-bottom: 35px;
}

.alert {
    border-radius: 12px;
    border: none;
    padding: 15px 20px;
    margin-bottom: 25px;
    animation: fadeIn 0.5s ease-in-out;
    position: relative;
    overflow: hidden;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    color: #856404;
    border-left: 4px solid #ffc107;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
    border-left: 4px solid #dc3545;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.auth-form {
    margin-top: 10px;
}

.form-group {
    position: relative;
    margin-bottom: 25px;
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 15px 20px 15px 50px;
    height: 55px;
    font-size: 15px;
    font-weight: 400;
    transition: all 0.3s ease;
    background: var(--white);
}

    .form-control:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(44, 83, 100, 0.1);
        outline: none;
        transform: translateY(-2px);
    }

.form-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
    z-index: 2;
    transition: all 0.3s ease;
}

.form-control:focus + .form-icon {
    color: var(--primary);
    transform: translateY(-50%) scale(1.1);
}

.auth-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    font-weight: 600;
    border-radius: 12px;
    height: 55px;
    border: none;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

    .auth-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 25px rgba(44, 83, 100, 0.4);
    }

    .auth-btn:active {
        transform: translateY(-1px);
    }

    .auth-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;
    }

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

.auth-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
}

.forgot-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

    .forgot-link:hover {
        color: var(--primary-dark);
        transform: translateX(5px);
    }

/* Responsive */
@media (max-width: 480px) {
    .auth-container {
        padding: 15px;
    }

    .auth-card {
        padding: 40px 25px;
    }

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

/* Loading animation for button */
.btn-loading {
    position: relative;
    color: transparent;
}

    .btn-loading::after {
        content: '';
        position: absolute;
        width: 20px;
        height: 20px;
        top: 50%;
        left: 50%;
        margin-left: -10px;
        margin-top: -10px;
        border: 2px solid transparent;
        border-top: 2px solid white;
        border-radius: 50%;
        animation: spin 1s linear infinite;
    }

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}