/**
 * FFoA LMS - Main Stylesheet
 * Financial Foundations of America Brand
 *
 * @package FFOA_LMS
 * @version 1.1.0
 */

/* ============================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================ */

:root {
    /* Brand Colors */
    --color-ffoa-gold: #C2B97F;
    --color-ffoa-gold-dark: #A89F6A;
    --color-ffoa-navy: #3F4F6E;
    --color-ffoa-navy-light: #566D8A;
    --color-ffoa-tan: #B5A070;
    --color-ffoa-tan-light: #C7B589;

    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-light-gray: #F5F5F5;
    --color-medium-gray: #666666;
    --color-dark-gray: #333333;
    --color-border-gray: #E0E0E0;

    /* State Colors */
    --color-success: #28A745;
    --color-warning: #FFA500;
    --color-error: #DC3545;
    --color-info: #17A2B8;

    /* Typography */
    --font-primary: "Helvetica Neue", Arial, sans-serif;
    --font-secondary: Georgia, serif;
    --font-display: Georgia, serif;

    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 22px;
    --font-size-2xl: 28px;
    --font-size-3xl: 36px;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Layout */
    --container-max-width: 1140px;
    --container-padding: 16px;
    --border-radius-sm: 4px;
    --border-radius-md: 6px;
    --border-radius-lg: 8px;
    --border-radius-xl: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.2);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

body.lms-page {
    font-family: var(--font-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-dark-gray);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

.lms-page h1,
.lms-page h2,
.lms-page h3,
.lms-page h4,
.lms-page h5,
.lms-page h6 {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-ffoa-navy);
    margin-bottom: var(--spacing-md);
}

.lms-page h1 {
    font-size: var(--font-size-3xl);
}

.lms-page h2 {
    font-size: var(--font-size-2xl);
}

.lms-page h3 {
    font-size: var(--font-size-xl);
}

.lms-page h4 {
    font-size: var(--font-size-lg);
}

.lms-page p {
    margin-bottom: var(--spacing-md);
}

.lms-page a {
    color: var(--color-ffoa-gold);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.lms-page a:hover {
    color: var(--color-ffoa-gold-dark);
    text-decoration: underline;
}

.lms-page a:focus {
    outline: 3px solid var(--color-ffoa-tan);
    outline-offset: 2px;
}

/* Text utilities */
.text-navy { color: var(--color-ffoa-navy); }
.text-orange { color: var(--color-ffoa-gold); }
.text-gold { color: var(--color-ffoa-tan); }
.text-gray { color: var(--color-medium-gray); }
.text-muted { color: var(--color-medium-gray); font-size: var(--font-size-sm); }

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

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

/* ============================================
   LAYOUT CONTAINERS
   ============================================ */

.lms-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.lms-container-fluid {
    width: 100%;
    padding: 0 var(--container-padding);
}

.lms-section {
    padding: var(--spacing-2xl) 0;
}

.lms-section--gray {
    background-color: var(--color-light-gray);
}

.lms-section--navy {
    background-color: var(--color-ffoa-navy);
    color: var(--color-white);
}

.lms-section--navy h1,
.lms-section--navy h2,
.lms-section--navy h3,
.lms-section--navy h4 {
    color: var(--color-white);
}

/* Grid System */
.lms-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.lms-grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.lms-grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.lms-grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Flex utilities */
.lms-flex {
    display: flex;
}

.lms-flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lms-flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.lms-flex-wrap {
    flex-wrap: wrap;
}

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

/* ============================================
   SPLIT-BRAND HEADER
   ============================================ */

.lms-header-split {
    display: flex;
    width: 100%;
    min-height: 120px;
    box-shadow: var(--shadow-md);
}

.lms-header-split__left {
    flex: 1;
    background: linear-gradient(135deg, #C2B97F 0%, #A89F6A 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.lms-header-split__right {
    flex: 1;
    background: linear-gradient(135deg, #3F4F6E 0%, #566D8A 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    position: relative;
}

.lms-header-split__right::before {
    content: '';
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    border: 2px solid var(--color-ffoa-tan);
    opacity: 0.3;
}

.lms-header-split__logo {
    max-width: 200px;
    max-height: 80px;
    width: auto;
    height: auto;
}

/* Mini header (for lesson player) */
.lms-header-mini {
    display: flex;
    height: 60px;
    box-shadow: var(--shadow-sm);
}

.lms-header-mini__left {
    flex: 1;
    background: var(--color-ffoa-gold);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
}

.lms-header-mini__right {
    flex: 1;
    background: var(--color-ffoa-navy);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 var(--spacing-md);
}

.lms-header-mini__logo {
    max-height: 40px;
    width: auto;
}

/* ============================================
   NAVIGATION
   ============================================ */

.lms-nav {
    background-color: var(--color-ffoa-navy);
    box-shadow: var(--shadow-sm);
}

.lms-nav__container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.lms-nav__menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
}

.lms-nav__item {
    position: relative;
}

.lms-nav__link {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-white);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    border-bottom: 3px solid transparent;
}

.lms-nav__link:hover {
    background-color: var(--color-ffoa-navy-light);
    border-bottom-color: var(--color-ffoa-tan);
    text-decoration: none;
}

.lms-nav__link--active {
    background-color: var(--color-ffoa-gold);
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    border-bottom-color: var(--color-ffoa-gold);
}

.lms-nav__link--active:hover {
    background-color: var(--color-ffoa-gold-dark);
    border-bottom-color: var(--color-ffoa-gold-dark);
}

/* Mobile menu toggle */
.lms-nav__toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-ffoa-tan);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: var(--spacing-md);
}

/* ============================================
   BUTTONS
   ============================================ */

.lms-btn {
    display: inline-block;
    padding: 12px 32px;
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1.5;
}

.lms-btn:focus {
    outline: 3px solid var(--color-ffoa-tan);
    outline-offset: 2px;
}

/* Primary button (Gold - CTAs) */
.lms-btn--primary {
    background-color: var(--color-ffoa-gold);
    color: var(--color-white);
}

.lms-btn--primary:hover {
    background-color: var(--color-ffoa-gold-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

/* Secondary button (Navy outline) */
.lms-btn--secondary {
    background-color: transparent;
    color: var(--color-ffoa-navy);
    border: 2px solid var(--color-ffoa-navy);
}

.lms-btn--secondary:hover {
    background-color: var(--color-ffoa-navy);
    color: var(--color-white);
    text-decoration: none;
}

/* Success button */
.lms-btn--success {
    background-color: var(--color-success);
    color: var(--color-white);
}

.lms-btn--success:hover {
    background-color: #218838;
    text-decoration: none;
}

/* Disabled button */
.lms-btn:disabled,
.lms-btn--disabled {
    background-color: #CCCCCC;
    color: var(--color-medium-gray);
    cursor: not-allowed;
    opacity: 0.6;
}

.lms-btn:disabled:hover,
.lms-btn--disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Button sizes */
.lms-btn--sm {
    padding: 8px 20px;
    font-size: var(--font-size-sm);
}

.lms-btn--lg {
    padding: 16px 40px;
    font-size: var(--font-size-lg);
}

/* Full width button */
.lms-btn--block {
    display: block;
    width: 100%;
}

/* Icon buttons */
.lms-btn__icon {
    margin-right: var(--spacing-sm);
}

.lms-btn__icon--right {
    margin-right: 0;
    margin-left: var(--spacing-sm);
}

/* ============================================
   SPACING UTILITIES
   ============================================ */

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-xs { padding-top: var(--spacing-xs); }
.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-xs { padding-bottom: var(--spacing-xs); }
.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }

/* ============================================
   DISPLAY UTILITIES
   ============================================ */

.d-none { display: none; }
.d-block { display: block; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Visibility */
.hidden { visibility: hidden; }
.invisible { opacity: 0; }

/* ============================================
   ACCESSIBILITY
   ============================================ */

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

/* Skip to content link */
.lms-skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-ffoa-navy);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 100;
}

.lms-skip-link:focus {
    top: 0;
}