:root {
    --primary: #4361ee;
    --secondary: #3a0ca3;
    --success: #4cc9f0;
    --warning: #f72585;
    --danger: #e63946;
    --light: #f8f9fa;
    --dark: #212529;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-800: #343a40;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    opacity: 0.9;
    z-index: -2;
}

.bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

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

.shape:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 20%;
    right: 10%;
    animation-delay: 2s;
}

.shape:nth-child(3) {
    width: 60px;
    height: 60px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

.shape:nth-child(4) {
    width: 100px;
    height: 100px;
    bottom: 10%;
    right: 20%;
    animation-delay: 1s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
}

.login-container {
    width: 100%;
    max-width: 600px;
    padding: 20px;
    z-index: 10;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--success), var(--warning));
    border-radius: 20px 20px 0 0;
}

.logo-container {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    width: 100%;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.logo i {
    font-size: 35px;
    color: white;
}

@keyframes pulse {
    0% {
        box-shadow: 0 10px 30px rgba(67, 97, 238, 0.3);
    }

    50% {
        box-shadow: 0 15px 40px rgba(67, 97, 238, 0.5);
    }

    100% {
        box-shadow: 0 10px 30px rgba(67, 97, 238, 0.3);
    }
}

.app-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 5px;
}

.app-subtitle {
    color: #666;
    font-size: 14px;
    margin-bottom: 0;
}

.clock-container {
    text-align: center;
    margin-bottom: 30px;
    padding: 15px;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-radius: 15px;
    border: 1px solid #e9ecef;
}

.current-time {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 5px;
    font-family: 'Poppins', monospace;
}

.current-date {
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

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

.input-group {
    position: relative;
}

.input-group-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    color: white;
    padding: 12px 15px;
    box-shadow: 0 4px 15px rgba(67, 97, 238, 0.2);
}

.form-control {
    border: 2px solid #e9ecef;
    border-left: none;
    padding: 12px 15px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
    background: white;
}

.form-control.is-invalid {
    border-color: var(--danger);
}

.form-control.is-valid {
    border-color: #28a745;
}

.invalid-feedback {
    display: block;
    font-size: 12px;
    color: var(--danger);
    margin-top: 5px;
    margin-left: 5px;
}

.valid-feedback {
    display: block;
    font-size: 12px;
    color: #28a745;
    margin-top: 5px;
    margin-left: 5px;
}

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #666;
    z-index: 10;
    transition: color 0.3s ease;
}

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

.btn-login {
    width: 100%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: 12px;
    padding: 12px 20px;
    font-weight: 600;
    font-size: 16px;
    color: white;
    box-shadow: 0 8px 25px rgba(67, 97, 238, 0.3);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-login::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;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(67, 97, 238, 0.4);
}

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

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

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.forgot-password {
    text-align: center;
    margin-top: 20px;
}

.forgot-password a {
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.forgot-password a:hover {
    color: var(--secondary);
    text-decoration: underline;
}

.loading-spinner {
    display: none;
    margin-right: 10px;
}

/* Responsive Design */
@media (max-width: 576px) {
    .login-container {
        padding: 15px;
    }

    .login-card {
        padding: 30px 20px;
    }

    .app-title {
        font-size: 20px;
    }

    .current-time {
        font-size: 24px;
    }
}

/* Animation Classes */
.shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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