/* Flight Delay Prediction System - Premium Glassmorphism with Airport Background */

/* Global Styles */
.main {
    background: linear-gradient(
        to right,
        rgba(255,255,255,0.96),
        rgba(255,255,255,0.85),
        rgba(255,255,255,0.3),
        rgba(255,255,255,0)
    ),
    url('https://user7018.na.imgto.link/public/20260408/morning-at-the-airport-gate.avif');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    min-height: 100vh;
    color: #1A2B3C;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    padding: 0;
    margin: 0;
    max-width: 100%;
    overflow-x: hidden;
}

/* Remove default Streamlit padding */
.stApp {
    padding: 0 !important;
}

/* Streamlit main content container */
.block-container {
    padding-top: 1rem !important;
    padding-bottom: 1rem !important;
    max-width: 1200px !important;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Section Spacing */
.section-spacing {
    margin: 60px 0;
    padding: 0 1rem;
}

/* Navigation */
.navbar {
    background: #0B2A4A;
    padding: 1rem 2rem;
    border-radius: 0;
    margin-bottom: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-menu li {
    color: white;
    cursor: pointer;
    transition: color 0.3s ease;
    font-weight: 500;
}

.nav-menu li:hover {
    color: #2F80ED;
}

.nav-button {
    background: #2F80ED;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
}

.nav-button:hover {
    background: #1C6ED5;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(47, 128, 237, 0.3);
}

/* Hero Section */
.hero-section {
    padding: 6rem 1rem;
    margin: 0;
    position: relative;
    overflow: hidden;
    width: 100%;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    color: #1A2B3C;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: #4A5D73;
    margin-bottom: 2.5rem;
    line-height: 1.6;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary {
    background: #2F80ED;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-size: 1rem;
}

.btn-primary:hover {
    background: #1C6ED5;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(47, 128, 237, 0.3);
}

.btn-secondary {
    background: rgba(255,255,255,0.9);
    border: 1px solid #2F80ED;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-size: 1rem;
    color: #2F80ED;
}

.btn-secondary:hover {
    background: #2F80ED;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(47, 128, 237, 0.3);
}

/* Flight Status Board */
.flight-status-board {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(6px);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.status-on-time {
    background: #27AE60;
}

.status-delayed {
    background: #E74C3C;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Base Card */
.card {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(6px);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.12);
}

/* Feature Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 60px;
}

.feature-card {
    text-align: center;
    padding: 2.5rem 2rem;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(6px);
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.12);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: rgba(47, 128, 237, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: #2F80ED;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    background: #2F80ED;
    color: white;
    transform: scale(1.1);
}

.feature-title {
    font-size: 1.4rem;
    font-weight: bold;
    color: #1A2B3C;
    margin-bottom: 1rem;
}

.feature-description {
    color: #4A5D73;
    line-height: 1.6;
    font-size: 1rem;
    font-weight: 500;
}

/* Pipeline Section */
.pipeline-section {
    background: rgba(245, 247, 250, 0.95);
    padding: 60px 1rem;
    margin-bottom: 60px;
}

.pipeline-section h2 {
    color: #1A2B3C !important;
}

.pipeline-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    position: relative;
}

.pipeline-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(to right, #2F80ED, #4F8EF7, #7FB3FF);
    z-index: 0;
}

.pipeline-step {
    flex: 1;
    min-width: 150px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    background: #2F80ED;
    color: white;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-weight: bold;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(47, 128, 237, 0.3);
    transition: all 0.3s ease;
}

.pipeline-step:hover .step-number {
    transform: scale(1.1);
    background: #1C6ED5;
}

.step-title {
    font-weight: bold;
    color: #1A2B3C;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.step-description {
    color: #4A5D73;
    font-size: 0.95rem;
    line-height: 1.5;
    font-weight: 500;
}

/* Dashboard Cards */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 60px;
}

.dashboard-card {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(6px);
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.metric-card {
    text-align: center;
    padding: 2.5rem;
}

.metric-value {
    font-size: 3rem;
    font-weight: bold;
    background: linear-gradient(45deg, #2F80ED, #4F8EF7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.metric-label {
    color: #1A2B3C;
    font-size: 1.1rem;
    font-weight: 600;
}

.metric-change {
    color: #27AE60;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.metric-change.negative {
    color: #E74C3C;
}

/* Prediction Form */
.prediction-form {
    padding: 2.5rem;
    margin-bottom: 60px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(6px);
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #1A2B3C;
    font-size: 1rem;
}

.form-input, .form-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #DCE3EA;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: #2F80ED;
    box-shadow: 0 0 0 3px rgba(47, 128, 237, 0.1);
}

/* Prediction Result */
.prediction-result {
    padding: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(6px);
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.result-probability {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.result-delayed {
    color: #E74C3C;
}

.result-ontime {
    color: #27AE60;
}

.result-label {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1A2B3C;
}

.result-description {
    color: #4A5D73;
    line-height: 1.6;
    font-size: 1rem;
}

/* Warning Box */
.warning-box {
    background: rgba(253, 235, 208, 0.9);
    backdrop-filter: blur(6px);
    border-left: 4px solid #F39C12;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin: 1rem 0;
    color: #E67E22;
}

/* Impact Section */
.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 60px;
}

.impact-card {
    text-align: center;
    padding: 2.5rem;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(6px);
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.impact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.12);
}

.impact-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #2F80ED;
    margin-bottom: 0.5rem;
}

.impact-title {
    font-size: 1.3rem;
    font-weight: bold;
    color: #1A2B3C;
    margin-bottom: 1rem;
}

.impact-description {
    color: #4A5D73;
    line-height: 1.6;
    font-size: 1rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background: #0B2A4A;
    color: white;
    padding: 3rem 2rem;
    text-align: center;
    margin-top: 60px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.footer-links a:hover {
    color: #2F80ED;
}

.footer-copyright {
    color: #7A8CA5;
    margin-bottom: 1rem;
}

/* Chart containers */
.chart-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(6px);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    margin-bottom: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pipeline-steps {
        flex-direction: column;
        gap: 3rem;
    }
    
    .pipeline-steps::before {
        display: none;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .impact-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }
}