/*
Theme Name: CASC CRM
Theme URI: https://casc.org
Author: CASC
Author URI: https://casc.org
Description: A modern theme for the Coalition for Academic Scientific Computation CRM, featuring a clean design with dark headers and vibrant accents.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.4
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: casc-crm
Tags: custom-menu, custom-logo, featured-images, threaded-comments, translation-ready
*/

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Primary Colors */
    --casc-primary: #6392FF;
    --casc-primary-light: #82b5ff;
    --casc-primary-dark: #4a78e6;
    --casc-secondary: #7c3aed;
    --casc-accent: #f472b6;
    --casc-base: #272731;
    --casc-base-dark: #011627;

    /* Neutral Colors */
    --casc-white: #ffffff;
    --casc-gray-50: #f9fafb;
    --casc-gray-100: #edf2f4;
    --casc-gray-200: #eaeaea;
    --casc-gray-300: #d7d7d7;
    --casc-gray-400: #9797af;
    --casc-gray-500: #616161;
    --casc-gray-600: #4b5563;
    --casc-gray-700: #374151;
    --casc-gray-800: #1f2937;
    --casc-gray-900: #111827;

    /* Semantic Colors */
    --casc-success: #22c55e;
    --casc-error: #ff4c4c;
    --casc-warning: #f59e0b;
    --casc-info: #3b82f6;

    /* Typography - Font Families */
    --casc-font-display: "neue-haas-grotesk-display", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --casc-font-body: "neue-haas-grotesk-text", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --casc-font-code: "dico-code-one", "Fira Code", "Consolas", monospace;
    --casc-font-nav: "Helvetica", "Arial", sans-serif;

    /* Typography - Font Sizes */
    --casc-text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --casc-text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --casc-text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --casc-text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.5rem);
    --casc-text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.75rem);
    --casc-text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2.25rem);
    --casc-text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 3rem);
    --casc-text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 4rem);
    --casc-text-5xl: clamp(3rem, 2.25rem + 3.75vw, 5rem);

    /* Font Weights */
    --casc-font-normal: 400;
    --casc-font-medium: 500;
    --casc-font-semibold: 600;
    --casc-font-bold: 700;
    --casc-font-extrabold: 800;

    /* Spacing Scale */
    --casc-space-3xs: 5px;
    --casc-space-2xs: clamp(9px, 0.5rem + 0.1vw, 10px);
    --casc-space-xs: clamp(14px, 0.75rem + 0.2vw, 15px);
    --casc-space-sm: clamp(18px, 1rem + 0.25vw, 20px);
    --casc-space-md: clamp(27px, 1.5rem + 0.375vw, 30px);
    --casc-space-lg: clamp(36px, 2rem + 0.5vw, 40px);
    --casc-space-xl: clamp(54px, 3rem + 0.75vw, 60px);
    --casc-space-2xl: clamp(72px, 4rem + 1vw, 80px);
    --casc-space-3xl: clamp(108px, 6rem + 1.5vw, 120px);

    /* Border Radius */
    --casc-radius-sm: 4px;
    --casc-radius-md: 8px;
    --casc-radius-lg: 16px;
    --casc-radius-xl: 24px;
    --casc-radius-full: 9999px;

    /* Shadows */
    --casc-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --casc-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --casc-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --casc-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --casc-transition-fast: 0.15s ease;
    --casc-transition-base: 0.2s ease;
    --casc-transition-slow: 0.3s ease;

    /* Layout */
    --casc-container-max: 1400px;
    --casc-content-max: 800px;
    --casc-header-height: 80px;
}

/* ============================================
   Base Reset & Global Styles
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--casc-font-body);
    font-size: var(--casc-text-base);
    line-height: 1.6;
    color: var(--casc-base);
    background-color: var(--casc-white);
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--casc-font-display);
    font-weight: var(--casc-font-bold);
    line-height: 1.2;
    margin: 0 0 var(--casc-space-sm);
    color: var(--casc-base-dark);
}

h1 { font-size: var(--casc-text-4xl); }
h2 { font-size: var(--casc-text-3xl); }
h3 { font-size: var(--casc-text-2xl); }
h4 { font-size: var(--casc-text-xl); }
h5 { font-size: var(--casc-text-lg); }
h6 { font-size: var(--casc-text-base); }

p {
    margin: 0 0 var(--casc-space-sm);
}

a {
    color: var(--casc-primary);
    text-decoration: none;
    transition: color var(--casc-transition-fast);
}

a:hover {
    color: var(--casc-primary-dark);
}

/* ============================================
   Layout Containers
   ============================================ */
.casc-container {
    width: 100%;
    max-width: var(--casc-container-max);
    margin: 0 auto;
    padding: 0 var(--casc-space-md);
}

.casc-container--narrow {
    max-width: var(--casc-content-max);
}

.casc-section {
    padding: var(--casc-space-2xl) 0;
}

.casc-section--dark {
    background-color: var(--casc-base-dark);
    color: var(--casc-white);
}

.casc-section--dark h1,
.casc-section--dark h2,
.casc-section--dark h3,
.casc-section--dark h4,
.casc-section--dark h5,
.casc-section--dark h6 {
    color: var(--casc-white);
}

.casc-section--gray {
    background-color: var(--casc-gray-100);
}

/* ============================================
   Site Header
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--casc-base-dark);
    height: var(--casc-header-height);
    display: flex;
    align-items: center;
    transition: transform var(--casc-transition-base);
}

/* Admin bar offset */
.admin-bar .site-header {
    top: 32px;
}

.admin-bar #page {
    padding-top: 32px;
}

@media screen and (max-width: 782px) {
    .admin-bar .site-header {
        top: 46px;
    }

    .admin-bar #page {
        padding-top: 46px;
    }
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--casc-container-max);
    margin: 0 auto;
    padding: 0 var(--casc-space-md);
}

.site-header__logo {
    display: flex;
    align-items: center;
}

.site-header__logo img {
    height: 40px;
    width: auto;
}

.site-header__logo-text {
    font-family: var(--casc-font-display);
    font-size: var(--casc-text-xl);
    font-weight: var(--casc-font-bold);
    color: var(--casc-white);
    margin-left: var(--casc-space-xs);
}

/* ============================================
   Main Navigation
   ============================================ */
.main-navigation {
    display: flex;
    align-items: center;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--casc-space-xs);
}

.main-navigation li {
    position: relative;
}

.main-navigation a {
    display: block;
    padding: var(--casc-space-2xs) var(--casc-space-xs);
    font-family: var(--casc-font-nav);
    font-size: var(--casc-text-sm);
    font-weight: var(--casc-font-medium);
    color: var(--casc-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color var(--casc-transition-fast);
}

.main-navigation a:hover,
.main-navigation .current-menu-item > a,
.main-navigation .current_page_item > a {
    color: var(--casc-primary-light);
}

/* Dropdown menus */
.main-navigation .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--casc-white);
    border-radius: var(--casc-radius-md);
    box-shadow: var(--casc-shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--casc-transition-base);
    flex-direction: column;
    padding: var(--casc-space-2xs) 0;
}

.main-navigation li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-navigation .sub-menu a {
    color: var(--casc-base);
    text-transform: none;
    letter-spacing: normal;
    padding: var(--casc-space-2xs) var(--casc-space-sm);
}

.main-navigation .sub-menu a:hover {
    color: var(--casc-primary);
    background-color: var(--casc-gray-100);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--casc-space-2xs);
    cursor: pointer;
    color: var(--casc-white);
}

.menu-toggle svg {
    width: 24px;
    height: 24px;
}

/* Header actions (login, etc) */
.site-header__actions {
    display: flex;
    align-items: center;
    gap: var(--casc-space-xs);
}

/* ============================================
   Buttons
   ============================================ */
.casc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75em 1.5em;
    font-family: var(--casc-font-body);
    font-size: var(--casc-text-sm);
    font-weight: var(--casc-font-semibold);
    line-height: 1;
    text-decoration: none;
    border: none;
    border-radius: var(--casc-radius-sm);
    cursor: pointer;
    transition: all var(--casc-transition-base);
}

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

.casc-btn--primary:hover {
    background-color: var(--casc-primary-dark);
    color: var(--casc-white);
}

.casc-btn--secondary {
    background-color: transparent;
    color: var(--casc-white);
    border: 2px solid var(--casc-white);
}

.casc-btn--secondary:hover {
    background-color: var(--casc-white);
    color: var(--casc-base-dark);
}

.casc-btn--outline {
    background-color: transparent;
    color: var(--casc-primary);
    border: 2px solid var(--casc-primary);
}

.casc-btn--outline:hover {
    background-color: var(--casc-primary);
    color: var(--casc-white);
}

.casc-btn--small {
    padding: 0.5em 1em;
    font-size: var(--casc-text-xs);
}

.casc-btn--large {
    padding: 1em 2em;
    font-size: var(--casc-text-base);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    background-color: var(--casc-base-dark);
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(1, 22, 39, 0.9) 0%,
        rgba(39, 39, 49, 0.85) 50%,
        rgba(99, 146, 255, 0.7) 100%
    );
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    color: var(--casc-white);
}

.hero__title {
    font-size: var(--casc-text-5xl);
    font-weight: var(--casc-font-extrabold);
    color: var(--casc-white);
    margin-bottom: var(--casc-space-sm);
}

.hero__subtitle {
    font-size: var(--casc-text-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--casc-space-md);
}

.hero__actions {
    display: flex;
    gap: var(--casc-space-sm);
    flex-wrap: wrap;
}

/* ============================================
   Cards
   ============================================ */
.casc-card {
    background-color: var(--casc-white);
    border-radius: var(--casc-radius-lg);
    box-shadow: var(--casc-shadow-md);
    overflow: hidden;
    transition: transform var(--casc-transition-base), box-shadow var(--casc-transition-base);
}

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

.casc-card__image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.casc-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.casc-card__content {
    padding: var(--casc-space-md);
}

.casc-card__title {
    font-size: var(--casc-text-xl);
    margin-bottom: var(--casc-space-2xs);
}

.casc-card__excerpt {
    color: var(--casc-gray-500);
    margin-bottom: var(--casc-space-sm);
}

/* Card Grid */
.casc-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--casc-space-md);
}

/* ============================================
   Site Footer
   ============================================ */
.site-footer {
    background-color: var(--casc-base-dark);
    color: var(--casc-white);
    padding: var(--casc-space-xl) 0 var(--casc-space-md);
}

.site-footer__inner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--casc-space-lg);
    margin-bottom: var(--casc-space-lg);
}

.site-footer__brand {
    max-width: 300px;
}

.site-footer__logo {
    height: 50px;
    width: auto;
    margin-bottom: var(--casc-space-sm);
}

.site-footer__description {
    color: var(--casc-gray-400);
    font-size: var(--casc-text-sm);
}

.site-footer__nav h4 {
    color: var(--casc-white);
    font-size: var(--casc-text-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--casc-space-sm);
}

.site-footer__nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.site-footer__nav li {
    margin-bottom: var(--casc-space-2xs);
}

.site-footer__nav a {
    color: var(--casc-gray-400);
    font-size: var(--casc-text-sm);
    transition: color var(--casc-transition-fast);
}

.site-footer__nav a:hover {
    color: var(--casc-primary-light);
}

.site-footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--casc-space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--casc-space-sm);
}

.site-footer__copyright {
    color: var(--casc-gray-400);
    font-size: var(--casc-text-sm);
}

.site-footer__social {
    display: flex;
    gap: var(--casc-space-xs);
}

.site-footer__social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--casc-radius-full);
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--casc-white);
    transition: background-color var(--casc-transition-fast);
}

.site-footer__social a:hover {
    background-color: var(--casc-primary);
}

/* ============================================
   Content Styles
   ============================================ */
.site-main {
    min-height: calc(100vh - var(--casc-header-height) - 300px);
}

.entry-content {
    max-width: var(--casc-content-max);
    margin: 0 auto;
}

.entry-content > * + * {
    margin-top: var(--casc-space-sm);
}

.entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--casc-radius-md);
}

.entry-content ul,
.entry-content ol {
    padding-left: var(--casc-space-md);
}

.entry-content li {
    margin-bottom: var(--casc-space-2xs);
}

.entry-content blockquote {
    margin: var(--casc-space-md) 0;
    padding: var(--casc-space-md);
    background-color: var(--casc-gray-100);
    border-left: 4px solid var(--casc-primary);
    border-radius: var(--casc-radius-md);
}

.entry-content blockquote p:last-child {
    margin-bottom: 0;
}

.entry-content pre,
.entry-content code {
    font-family: var(--casc-font-code);
}

.entry-content pre {
    background-color: var(--casc-base-dark);
    color: var(--casc-white);
    padding: var(--casc-space-md);
    border-radius: var(--casc-radius-md);
    overflow-x: auto;
}

.entry-content code {
    background-color: var(--casc-gray-100);
    padding: 0.2em 0.4em;
    border-radius: var(--casc-radius-sm);
    font-size: 0.9em;
}

.entry-content pre code {
    background-color: transparent;
    padding: 0;
}

/* ============================================
   Forms
   ============================================ */
.casc-form-group {
    margin-bottom: var(--casc-space-sm);
}

.casc-label {
    display: block;
    font-size: var(--casc-text-sm);
    font-weight: var(--casc-font-medium);
    color: var(--casc-base);
    margin-bottom: var(--casc-space-2xs);
}

.casc-input,
.casc-select,
.casc-textarea {
    width: 100%;
    padding: 0.75em 1em;
    font-family: var(--casc-font-body);
    font-size: var(--casc-text-base);
    color: var(--casc-base);
    background-color: var(--casc-white);
    border: 1px solid var(--casc-gray-300);
    border-radius: var(--casc-radius-sm);
    transition: border-color var(--casc-transition-fast), box-shadow var(--casc-transition-fast);
}

.casc-input:focus,
.casc-select:focus,
.casc-textarea:focus {
    outline: none;
    border-color: var(--casc-primary);
    box-shadow: 0 0 0 3px rgba(99, 146, 255, 0.15);
}

/* ============================================
   Alerts
   ============================================ */
.casc-alert {
    padding: var(--casc-space-sm) var(--casc-space-md);
    border-radius: var(--casc-radius-md);
    margin-bottom: var(--casc-space-sm);
}

.casc-alert--success {
    background-color: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--casc-success);
    color: #166534;
}

.casc-alert--error {
    background-color: rgba(255, 76, 76, 0.1);
    border: 1px solid var(--casc-error);
    color: #b91c1c;
}

.casc-alert--warning {
    background-color: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--casc-warning);
    color: #92400e;
}

.casc-alert--info {
    background-color: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--casc-info);
    color: #1e40af;
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
    background-color: var(--casc-base-dark);
    padding: var(--casc-space-xl) 0;
    text-align: center;
}

.page-header__title {
    color: var(--casc-white);
    margin-bottom: var(--casc-space-2xs);
}

.page-header__subtitle {
    color: var(--casc-gray-400);
    font-size: var(--casc-text-lg);
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--casc-space-2xs);
    font-size: var(--casc-text-sm);
    color: var(--casc-gray-400);
    margin-bottom: var(--casc-space-sm);
}

.breadcrumbs a {
    color: var(--casc-primary-light);
}

.breadcrumbs__separator {
    color: var(--casc-gray-500);
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--casc-space-2xs);
    margin-top: var(--casc-space-xl);
}

.pagination .page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--casc-space-2xs);
    font-size: var(--casc-text-sm);
    color: var(--casc-base);
    background-color: var(--casc-white);
    border: 1px solid var(--casc-gray-300);
    border-radius: var(--casc-radius-sm);
    transition: all var(--casc-transition-fast);
}

.pagination .page-numbers:hover,
.pagination .page-numbers.current {
    background-color: var(--casc-primary);
    border-color: var(--casc-primary);
    color: var(--casc-white);
}

/* ============================================
   Sidebar & Widgets
   ============================================ */
.widget {
    margin-bottom: var(--casc-space-lg);
}

.widget-title {
    font-size: var(--casc-text-lg);
    margin-bottom: var(--casc-space-sm);
    padding-bottom: var(--casc-space-2xs);
    border-bottom: 2px solid var(--casc-primary);
}

.widget ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.widget li {
    padding: var(--casc-space-2xs) 0;
    border-bottom: 1px solid var(--casc-gray-200);
}

.widget li:last-child {
    border-bottom: none;
}

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 992px) {
    .menu-toggle {
        display: block;
    }

    .main-navigation {
        position: absolute;
        top: var(--casc-header-height);
        left: 0;
        right: 0;
        background-color: var(--casc-base-dark);
        padding: var(--casc-space-md);
        display: none;
        flex-direction: column;
        box-shadow: var(--casc-shadow-lg);
    }

    .main-navigation.is-open {
        display: flex;
    }

    .main-navigation ul {
        flex-direction: column;
        width: 100%;
    }

    .main-navigation .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: rgba(255, 255, 255, 0.05);
        border-radius: var(--casc-radius-sm);
        margin-top: var(--casc-space-2xs);
        padding: var(--casc-space-2xs);
    }

    .main-navigation .sub-menu a {
        color: var(--casc-gray-300);
    }

    .site-footer__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .site-footer__brand {
        max-width: none;
    }

    .site-footer__bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .hero__title {
        font-size: var(--casc-text-3xl);
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .casc-btn {
        width: 100%;
    }

    .casc-card-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--casc-space-sm); }
.mb-md { margin-bottom: var(--casc-space-md); }
.mb-lg { margin-bottom: var(--casc-space-lg); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--casc-space-sm); }
.mt-md { margin-top: var(--casc-space-md); }
.mt-lg { margin-top: var(--casc-space-lg); }

.hidden { display: none; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* WordPress Core Alignment */
.alignleft {
    float: left;
    margin-right: var(--casc-space-md);
    margin-bottom: var(--casc-space-sm);
}

.alignright {
    float: right;
    margin-left: var(--casc-space-md);
    margin-bottom: var(--casc-space-sm);
}

.aligncenter {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.alignwide {
    max-width: calc(var(--casc-container-max) - var(--casc-space-md) * 2);
    margin-left: auto;
    margin-right: auto;
}

.alignfull {
    width: 100vw;
    max-width: 100vw;
    margin-left: calc(-50vw + 50%);
}