/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: #ffffff;
    scroll-behavior: smooth;
}

/* Banner Section */
.banner {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #226ecc 0%, #1e5bb8 50%, #1a4fa0 100%);
    background-image: url('../img/bg-image.png');
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    min-height: 90vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(0, 0, 0, 0.8) 100%);
    z-index: 1;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 2;
}

.flex-banner {
    position: relative;
    z-index: 3;
    width: 100%;
    max-width: 1200px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
}

/* Banner Left Content */
.banner-left {
    flex: 1;
    max-width: 600px;
}

.content-wrapper {
    animation: slideInLeft 0.8s ease-out;
}

.banner-left h1 {
    font-size: clamp(2.5rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.banner-left p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
    line-height: 1.8;
    font-weight: 400;
}

.explore {
    margin-top: 32px;
}

.explore-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    text-decoration: none;
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 25px rgba(79, 70, 229, 0.3);
    position: relative;
    overflow: hidden;
}

.span{
    color: #fff;
}

.explore-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;
}

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

.explore-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(79, 70, 229, 0.4);
    background: linear-gradient(135deg, #5b21b6 0%, #4f46e5 100%);
}

.explore-btn i {
    transition: transform 0.3s ease;
}

.explore-btn:hover i {
    transform: translateX(4px);
}

/* Banner Right - Form Container */
.banner-right {
    flex: 0 0 450px;
    animation: slideInRight 0.8s ease-out;
}

.form-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

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

.form-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 8px;
}

.form-header p {
    color: #718096;
    font-size: 0.95rem;
}

/* Alert Messages */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 24px;
    font-weight: 500;
    transition: all 0.3s ease;
    animation: slideInDown 0.3s ease-out;
}

.alert-error {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    color: #dc2626;
    border: 1px solid #fecaca;
}

.alert-success {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

.alert i {
    font-size: 1.1rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group input {
    width: 100%;
    padding: 16px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #ffffff;
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: #4f46e5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    transform: translateY(-1px);
}

.form-group input::placeholder {
    color: #9ca3af;
}

/* Password Input Wrapper */
.password-input-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.3s ease;
}

.password-toggle:hover {
    color: #4f46e5;
}

/* Login Button */
.login-btn {
    width: 100%;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    border: none;
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    position: relative;
    overflow: hidden;
}

.login-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;
}

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

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.4);
    background: linear-gradient(135deg, #5b21b6 0%, #4f46e5 100%);
}

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

.login-btn i {
    transition: transform 0.3s ease;
}

.login-btn:hover i {
    transform: translateX(4px);
}

/* Form Footer */
.form-footer {
    text-align: center;
    margin: 24px 0 0 0;
}

.forgot-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #4f46e5;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 8px 16px;
    border-radius: 8px;
}

.forgot-link:hover {
    color: #5b21b6;
    background: rgba(79, 70, 229, 0.05);
    transform: translateY(-1px);
}

/* Divider */
.divider {
    position: relative;
    text-align: center;
    margin: 0px;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e5e7eb;
}

.divider span {
    background: #ffffff;
    padding: 0 16px;
    color: #9ca3af;
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

/* Register Prompt */
.register-prompt {
    text-align: center;
    padding: 16px;
    background: #f8fafc;
    border-radius: 12px;
}

.register-prompt p {
    color: #64748b;
    margin: 0;
}

.register-prompt a {
    color: #4f46e5;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.register-prompt a:hover {
    color: #5b21b6;
}

/* Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .flex-banner {
        gap: 40px;
    }
    
    .banner-right {
        flex: 0 0 400px;
    }
}

@media (max-width: 900px) {
    .banner {
        min-height: 100vh;
        padding: 20px;
    }
    
    .flex-banner {
        flex-direction: column;
        gap: 40px;
        text-align: center;
    }
    
    .banner-left,
    .banner-right {
        width: 100%;
        max-width: 500px;
    }
    
    .form-container {
        padding: 32px;
    }
}

@media (max-width: 600px) {
    .banner {
        padding: 16px;
    }
    
    .banner-left h1 {
        font-size: 2.2rem;
        line-height: 1.3;
    }
    
    .banner-left p {
        font-size: 1rem;
    }
    
    .form-container {
        padding: 24px;
        border-radius: 16px;
    }
    
    .form-header h2 {
        font-size: 1.6rem;
    }
    
    .explore-btn {
        padding: 14px 28px;
        font-size: 1rem;
    }
}

@media (max-width: 400px) {
    .form-container {
        padding: 20px;
        margin: 0 8px;
    }
    
    .banner-left h1 {
        font-size: 1.8rem;
    }
    
    .banner-left p {
        font-size: 0.9rem;
    }
}

/* Focus and accessibility improvements */
.form-group input:focus,
.login-btn:focus,
.explore-btn:focus,
.forgot-link:focus,
.password-toggle:focus {
    outline: 2px solid #4f46e5;
    outline-offset: 2px;
}

/* Loading state for button */
.login-btn.loading {
    opacity: 0.7;
    cursor: not-allowed;
}

.login-btn.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 8px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}