/**
 * CargoFlow User Interface - FedEx Inspired Design
 * Modern, professional package tracking interface
 */

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

:root {
    /* FedEx-inspired Color Palette */
    --fedex-purple: #4D148C;
    --fedex-purple-dark: #3A0F6B;
    --fedex-purple-light: #6B2FA0;
    --fedex-orange: #FF6600;
    --fedex-orange-dark: #E55A00;
    --fedex-orange-light: #FF8533;
    --fedex-blue: #4A90E2;
    --fedex-blue-light: #6BA3E8;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Status Colors */
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --danger-color: #EF4444;
    --info-color: var(--fedex-blue);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: all 0.15s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
}

/* Base Styles */
body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--fedex-purple) 0%, var(--fedex-purple-dark) 100%);
    min-height: 100vh;
    color: var(--gray-800);
    line-height: 1.6;
    font-size: var(--font-size-base);
}

/* Header Section */
.header {
    background: var(--fedex-purple);
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--white);
    text-decoration: none;
    font-weight: 700;
    font-size: var(--font-size-xl);
    transition: var(--transition-fast);
}

.logo:hover {
    transform: translateY(-1px);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--fedex-orange);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.header-tagline {
    color: var(--gray-200);
    font-size: var(--font-size-sm);
    margin-top: 0.25rem;
    text-align: center;
}

/* Main Content */
.main-content {
    padding: 3rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    color: var(--white);
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    color: var(--gray-200);
    font-size: var(--font-size-lg);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Tracking Section */
.tracking-section {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-xl);
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.tracking-header {
    text-align: center;
    margin-bottom: 2rem;
}

.tracking-title {
    color: var(--gray-800);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.tracking-title::before {
    content: "🔍";
    font-size: var(--font-size-xl);
}

.tracking-description {
    color: var(--gray-600);
    font-size: var(--font-size-base);
}

/* Tracking Form */
.tracking-form {
    display: flex;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto 2rem;
    flex-wrap: wrap;
}

.tracking-input {
    flex: 1;
    min-width: 250px;
    padding: 1rem 1.25rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    transition: var(--transition-normal);
    background: var(--white);
    color: var(--gray-800);
}

.tracking-input:focus {
    outline: none;
    border-color: var(--fedex-purple);
    box-shadow: 0 0 0 3px rgba(77, 20, 140, 0.1);
    transform: translateY(-1px);
}

.tracking-input::placeholder {
    color: var(--gray-400);
    font-weight: 400;
}

.track-button {
    padding: 1rem 2rem;
    background: var(--fedex-orange);
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
}

.track-button:hover {
    background: var(--fedex-orange-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.track-button:active {
    transform: translateY(0);
}

.track-button::after {
    content: "→";
    font-size: var(--font-size-lg);
    transition: var(--transition-fast);
}

.track-button:hover::after {
    transform: translateX(2px);
}

/* Tracking Help */
.tracking-help {
    text-align: center;
    color: var(--gray-500);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.tracking-help::before {
    content: "ℹ️";
}

/* Package Result */
.package-result {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    border-left: 4px solid var(--fedex-orange);
    animation: slideInUp 0.5s ease;
}

.package-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.package-tracking-number {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--fedex-purple);
    letter-spacing: 0.5px;
}

.package-status {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-created {
    background: var(--fedex-blue);
    color: var(--white);
}

.status-in-transit {
    background: var(--warning-color);
    color: var(--white);
}

.status-out-for-delivery {
    background: var(--fedex-orange);
    color: var(--white);
}

.status-delivered {
    background: var(--success-color);
    color: var(--white);
}

/* Package Details Grid */
.package-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.detail-card {
    background: var(--gray-50);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.detail-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--gray-800);
    line-height: 1.5;
}

/* Package Journey */
.package-journey {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

.journey-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--gray-800);
}

.journey-header::before {
    content: "🚚";
    font-size: var(--font-size-xl);
}

.journey-timeline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    position: relative;
    padding: 1rem 0;
}

.journey-timeline::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gray-200);
    z-index: 1;
}

.journey-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 2;
    background: var(--white);
    padding: 0 0.5rem;
}

.journey-step-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: 600;
    border: 3px solid var(--gray-300);
    background: var(--white);
    color: var(--gray-400);
    transition: var(--transition-normal);
}

.journey-step.active .journey-step-icon {
    background: var(--fedex-purple);
    border-color: var(--fedex-purple);
    color: var(--white);
    transform: scale(1.1);
}

.journey-step.completed .journey-step-icon {
    background: var(--success-color);
    border-color: var(--success-color);
    color: var(--white);
}

.journey-step-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--gray-600);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.journey-step.active .journey-step-label {
    color: var(--fedex-purple);
}

/* Package Info */
.package-info {
    background: var(--fedex-blue);
    color: var(--white);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    margin-top: 1rem;
}

.package-info-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.package-info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.package-info-item::before {
    content: "ℹ️";
}

/* Features Section */
.features-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: var(--transition-normal);
    animation: fadeInUp 0.8s ease;
}

.feature-card:nth-child(2) {
    animation-delay: 0.1s;
}

.feature-card:nth-child(3) {
    animation-delay: 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--fedex-purple), var(--fedex-purple-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: var(--font-size-2xl);
    color: var(--white);
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--gray-600);
    line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 3rem 2rem;
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.8s ease 0.4s both;
}

.how-it-works-header {
    text-align: center;
    margin-bottom: 3rem;
}

.how-it-works-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.how-it-works-title::before {
    content: "❓";
    font-size: var(--font-size-xl);
}

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

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--fedex-purple);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-md);
}

.step-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.75rem;
}

.step-description {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    animation: slideInDown 0.3s ease;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-info {
    background: rgba(74, 144, 226, 0.1);
    color: var(--fedex-blue);
    border: 1px solid rgba(74, 144, 226, 0.2);
}

/* Loading States */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2rem;
    color: var(--gray-600);
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--gray-200);
    border-top: 3px solid var(--fedex-purple);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: 2rem 1rem;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .tracking-section {
        padding: 1.5rem;
    }
    
    .tracking-form {
        flex-direction: column;
    }
    
    .tracking-input {
        min-width: auto;
    }
    
    .package-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .package-details {
        grid-template-columns: 1fr;
    }
    
    .journey-timeline {
        flex-direction: column;
        gap: 1rem;
    }
    
    .journey-timeline::before {
        display: none;
    }
    
    .features-section {
        grid-template-columns: 1fr;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .header-container {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .tracking-section {
        padding: 1rem;
    }
    
    .how-it-works {
        padding: 2rem 1rem;
    }
}