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

html, body {
    height: 100%;
    font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* CSS Variables - Ticketmaster Color Scheme */
:root {
    /* Primary Colors */
    --tm-blue: #026CDF;
    --tm-dark-blue: #0156B3;
    --tm-light-blue: #E8F4FF;

    /* Neutrals */
    --tm-black: #000000;
    --tm-white: #FFFFFF;
    --tm-gray-dark: #2D2D2D;
    --tm-gray-med: #666666;
    --tm-gray-light: #D8D8D8;
    --tm-gray-lighter: #F5F5F5;

    /* Seat Map Colors */
    --seat-available: #3B82F6;
    --seat-unavailable: #9CA3AF;
    --seat-premium: #EC4899;
    --seat-hover: #60A5FA;
    --seat-selected: #10B981;

    /* Typography */
    --font-primary: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
}

/* Body Styles */
body {
    background-color: var(--tm-white);
    color: var(--tm-gray-dark);
    font-size: var(--font-size-base);
    line-height: 1.5;
}

/* Top Navigation Bar */
.top-nav {
    background-color: var(--tm-gray-lighter);
    border-bottom: 1px solid var(--tm-gray-light);
    padding: var(--spacing-sm) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

.top-nav a {
    color: var(--tm-gray-dark);
    text-decoration: none;
    margin: 0 var(--spacing-md);
    transition: color var(--transition-fast);
}

.top-nav a:hover {
    color: var(--tm-blue);
}

.nav-left, .nav-right {
    display: flex;
    align-items: center;
}

.paypal-link img {
    height: 16px;
    width: auto;
    display: block;
}

/* Main Navigation Bar */
.main-nav {
    background-color: var(--tm-blue);
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-nav .logo {
    color: var(--tm-white);
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    text-decoration: none;
}

.main-nav .nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.main-nav .nav-links a {
    color: var(--tm-white);
    text-decoration: none;
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.main-nav .nav-links a:hover,
.main-nav .nav-links a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Breadcrumb Navigation */
.breadcrumb {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 14px;
    color: var(--tm-gray-med);
    background-color: var(--tm-white);
}

.breadcrumb a {
    color: var(--tm-gray-med);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--tm-blue);
}

.breadcrumb span {
    color: var(--tm-gray-dark);
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: var(--tm-blue);
    color: var(--tm-white);
}

.btn-primary:hover {
    background-color: var(--tm-dark-blue);
}

.btn-secondary {
    background-color: var(--tm-white);
    color: var(--tm-blue);
    border: 1px solid var(--tm-blue);
}

.btn-secondary:hover {
    background-color: var(--tm-light-blue);
}

/* Form Elements */
input[type="text"],
input[type="email"],
input[type="password"],
select,
textarea {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--tm-gray-light);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-primary);
    transition: border-color var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--tm-blue);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.text-center {
    text-align: center;
}

.text-bold {
    font-weight: var(--font-weight-bold);
}

.text-semibold {
    font-weight: var(--font-weight-semibold);
}

/* Loading State */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

.loading::after {
    content: "";
    width: 40px;
    height: 40px;
    border: 4px solid var(--tm-gray-light);
    border-top-color: var(--tm-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive Breakpoints */
@media (max-width: 1200px) {
    .main-nav .nav-links {
        gap: var(--spacing-md);
    }
}

@media (max-width: 900px) {
    .top-nav {
        font-size: 12px;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .main-nav {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .main-nav .nav-links {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 600px) {
    .top-nav a {
        margin: 0 var(--spacing-sm);
        font-size: 11px;
    }

    .main-nav .nav-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}