/* Modern Design - Based on dashboard.php */
body {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    color: white;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Header */
header {
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex !important;
    align-items: center !important;
    gap: 0.75rem !important;
    text-decoration: none !important;
    color: white !important;
    font-weight: 900 !important;
    font-size: 1.75rem !important;
    transition: all 0.3s ease !important;
    text-shadow: 0 3px 6px rgba(0, 0, 0, 0.8), 0 0 20px rgba(255, 255, 255, 0.3) !important;
    letter-spacing: 1px !important;
}

.logo:hover {
    transform: translateY(-2px);
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 900;
    font-size: 1.5rem;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    text-shadow: 0 3px 6px rgba(0, 0, 0, 0.5), 0 0 15px rgba(255, 255, 255, 0.4);
}

nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    transform: translateY(-2px);
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

/* User Dropdown */
.user-dropdown {
    position: relative;
}

.user-dropdown-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-dropdown-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 0.5rem;
    min-width: 220px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    margin-top: 0.5rem;
}

.user-dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.dropdown-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.dropdown-item i {
    width: 16px;
    text-align: center;
}

.dropdown-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 0.5rem 0;
}

.dropdown-item.logout {
    color: #ef4444;
}

.dropdown-item.logout:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Main Container */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 4rem;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #e2e8f0;
    margin-bottom: 3rem;
    line-height: 1.7;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

/* Login Form */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.login-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 1.6rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 360px;
}

.login-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.5rem;
    text-align: center;
}

.login-subtitle {
    color: #cbd5e1;
    text-align: center;
    margin-bottom: 1.6rem;
    font-size: 0.95rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: #e2e8f0;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 0.8rem;
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.form-group input::placeholder {
    color: #94a3b8;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: rgba(255, 255, 255, 0.15);
}

.password-input {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input input {
    flex: 1;
    padding-right: 3rem;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.toggle-password:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.btn-login {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 0.8rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-login:hover {
    background: linear-gradient(135deg, #764ba2, #667eea);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.btn-register {
    background: #f59e0b;
    color: white;
    border: none;
    border-radius: 12px;
    padding: 0.8rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

.btn-register:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.6);
}

.forgot-password {
    text-align: center;
    margin-top: 1rem;
}

.forgot-password a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.forgot-password a:hover {
    color: white;
    text-decoration: underline;
}

.login-error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid rgba(239, 68, 68, 0.2);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.login-error i {
    font-size: 1.25rem;
}

/* User Welcome Card */
.welcome-section {
    text-align: center;
}

.welcome-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.25rem;
}

.welcome-subtitle {
    font-size: 1.3rem;
    color: #ffffff;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.welcome-user {
    font-size: 1rem;
    color: #e2e8f0;
    margin-bottom: 0.25rem;
    font-weight: 500;
}

/* Features Section */
.features {
    margin-bottom: 5rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: #e2e8f0;
    text-align: center;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    justify-items: center;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 1.8rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transform: scale(0.9);
}

.feature-card:hover {
    transform: scale(0.9) translateY(-5px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 15px;
    display: block;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 10px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.feature-description {
    font-size: 15px;
    line-height: 1.6;
    color: #e2e8f0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* How It Works Section */
.how-it-works {
    margin-bottom: 5rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    justify-items: center;
}

.step-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 1.8rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    transform: scale(0.9);
}

.step-card:hover {
    transform: scale(0.9) translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
}

.step-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 1rem;
}

.step-description {
    color: #e2e8f0;
    line-height: 1.6;
}

/* Footer */
footer {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(20px);
    color: white;
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: #ffffff;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.footer-section p {
    color: #e2e8f0;
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #e2e8f0;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-section a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    color: #94a3b8;
}

.footer-bottom i {
    margin-right: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        gap: 2rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .main-container {
        padding: 2rem 1rem;
    }
    
    .header-container {
        padding: 0 1rem;
    }
    
    .hero-content {
        padding: 2rem;
    }
    
    .login-card {
        padding: 2rem;
        margin: 0 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile-First Responsive Design */
@media (max-width: 480px) {
    /* Header Mobile */
    .header-container {
        padding: 0 1rem;
        height: 60px;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    
    .nav-link {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    /* Main Container */
    .main-container {
        padding: 1rem;
    }
    
    /* Hero Section */
    .hero {
        gap: 1.5rem;
        margin-bottom: 3rem;
    }
    
    .hero-content {
        padding: 1.5rem;
        border-radius: 16px;
    }
    
    .hero-title {
        font-size: 1.75rem;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    /* Login Form */
    .login-card {
        padding: 1.5rem;
        margin: 0;
    }
    
    .login-title {
        font-size: 1.5rem;
    }
    
    .login-subtitle {
        font-size: 0.875rem;
    }
    
    .form-group input {
        padding: 0.875rem;
        font-size: 0.95rem;
    }
    
    .btn-login, .btn-register {
        padding: 0.875rem;
        font-size: 0.95rem;
    }
    
    /* User Welcome */
    .welcome-title {
        font-size: 1.25rem;
    }
    
    .welcome-subtitle {
        font-size: 1rem;
    }
    
    /* Features Section */
    .features {
        margin-bottom: 3rem;
    }
    
    .section-title {
        font-size: 1.75rem;
        margin-bottom: 0.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .feature-icon {
        font-size: 28px;
        margin-bottom: 12px;
    }
    
    .feature-title {
        font-size: 18px;
        margin-bottom: 8px;
    }
    
    .feature-description {
        font-size: 14px;
    }
    
    /* How It Works */
    .how-it-works {
        margin-bottom: 3rem;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .step-card {
        padding: 1.5rem;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    .step-title {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }
    
    .step-description {
        font-size: 14px;
    }
    
    /* Footer */
    footer {
        padding: 2rem 0 1rem;
    }
    
    .footer-container {
        padding: 0 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-section h3 {
        font-size: 1.1rem;
    }
    
    .footer-section p {
        font-size: 14px;
    }
}

/* Extra Small Mobile */
@media (max-width: 360px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .feature-card, .step-card {
        padding: 1rem;
    }
}

/* Touch-friendly improvements */
@media (max-width: 768px) {
    .nav-link, .btn-login, .btn-register {
        min-height: 44px; /* Apple's recommended minimum touch target */
    }
    
    .dropdown-item {
        min-height: 44px;
        padding: 0.875rem 1rem;
    }
    
    .feature-card, .step-card {
        cursor: pointer;
    }
}