/* ==========================================
   LRAL Website - Main Stylesheet
   Modern CSS with Custom Properties
   ========================================== */

/* CSS Custom Properties (Design Tokens) */
:root {
    /* Color Palette - LRAL Brand Colors */
    --color-primary: #73281E;
    /* LRAL Red (Dark Logo Match) - brand identity */
    --color-primary-dark: #5a1f17;
    /* Darker red for hover states */
    --color-primary-light: #8e3226;
    /* Lighter red for accents */
    --color-secondary: #1e5aa8;
    /* LRAL Blue - trust, professionalism */
    --color-secondary-dark: #0d3b66;
    /* Darker blue */
    --color-secondary-light: #4a90e2;
    /* Light blue */
    --color-accent: #f59e0b;
    /* Orange accent - radio waves, warmth */
    --color-accent-dark: #d97706;
    /* Darker orange */
    --color-accent-light: #fbbf24;
    /* Light orange/amber */

    /* Latvian Flag Colors */
    --color-latvia: var(--color-primary);
    /* Latvian flag carmine red */
    --color-latvia-dark: #7a1f28;
    /* Darker carmine */
    --color-latvia-light: #c74854;
    /* Lighter carmine */

    /* Brand Gradients */
    --gradient-primary: linear-gradient(135deg, #73281E 0%, #8e3226 100%);
    --gradient-secondary: linear-gradient(135deg, #1e5aa8 0%, #4a90e2 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    --gradient-brand: linear-gradient(135deg, #73281E 0%, #1e5aa8 100%);
    --gradient-latvia: linear-gradient(135deg, #73281E 0%, #8e3226 100%);
    --gradient-flag: linear-gradient(to bottom, #73281E 0%, #73281E 40%, #ffffff 40%, #ffffff 60%, #73281E 60%, #73281E 100%);

    /* Grayscale */
    --color-black: #0f172a;
    --color-gray-900: #1e293b;
    --color-gray-800: #334155;
    --color-gray-700: #475569;
    --color-gray-600: #64748b;
    --color-gray-500: #94a3b8;
    --color-gray-400: #cbd5e1;
    --color-gray-300: #e2e8f0;
    --color-gray-200: #f1f5f9;
    --color-gray-100: #f8fafc;
    --color-white: #ffffff;

    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

    /* Font Sizes - Optimized Scale */
    --text-xs: 0.75rem;
    /* 12px */
    --text-sm: 0.875rem;
    /* 14px */
    --text-base: 1rem;
    /* 16px - minimum for body text */
    --text-lg: 1.125rem;
    /* 18px */
    --text-xl: 1.25rem;
    /* 20px */
    --text-2xl: 1.5rem;
    /* 24px */
    --text-3xl: 2rem;
    /* 32px - better hierarchy */
    --text-4xl: 2.5rem;
    /* 40px */
    --text-5xl: 3.5rem;
    /* 56px */
    --text-6xl: 4rem;
    /* 64px */

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

    /* Spacing Scale */
    --space-1: 0.25rem;
    /* 4px */
    --space-2: 0.5rem;
    /* 8px */
    --space-3: 0.75rem;
    /* 12px */
    --space-4: 1rem;
    /* 16px */
    --space-5: 1.25rem;
    /* 20px */
    --space-6: 1.5rem;
    /* 24px */
    --space-8: 2rem;
    /* 32px */
    --space-10: 2.5rem;
    /* 40px */
    --space-12: 3rem;
    /* 48px */
    --space-16: 4rem;
    /* 64px */
    --space-20: 5rem;
    /* 80px */
    --space-24: 6rem;
    /* 96px */

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

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

    /* Layout */
    --container-max-width: 1280px;
    --header-height: 80px;
}

/* ==========================================
   Reset & Base Styles
   ========================================== */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-bold);
    line-height: 1.2;
    margin-bottom: var(--space-4);
    color: var(--color-gray-900);
}

h1 {
    font-size: var(--text-5xl);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

p {
    margin-bottom: var(--space-4);
    line-height: 1.7;
    max-width: 75ch;
}

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

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

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Lists */
ul,
ol {
    list-style: none;
}

/* Skip Link (Accessibility) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
    z-index: 100;
}

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

/* ==========================================
   Layout Utilities
   ========================================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding-left: var(--space-6);
    padding-right: var(--space-6);
}

.section-padding {
    padding-top: var(--space-20);
    padding-bottom: var(--space-20);
}

.bg-light {
    background: #ffffff;
    border-top: 2px solid var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
}

/* ==========================================
   Header & Navigation
   ========================================== */

.site-header {
    position: sticky;
    top: 0;
    background-color: var(--color-white);
    border-bottom: 3px solid var(--color-primary);
    z-index: var(--z-sticky);
    transition: all 0.3s ease;
}

.site-header.scrolled {
    box-shadow: 0 4px 20px rgba(158, 48, 57, 0.15);
    border-bottom-width: 4px;
}

.main-nav {
    display: flex;
    align-items: center;
    height: var(--header-height);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: var(--font-bold);
    font-size: var(--text-xl);
    color: var(--color-gray-900);
    transition: all var(--transition-fast);
}

.logo-link:hover {
    transform: scale(1.05);
}

.logo-link:hover .logo-text {
    color: var(--color-primary);
}

.site-logo {
    height: 60px;
    width: auto;
    transition: transform var(--transition-fast);
}

.logo-text {
    font-weight: var(--font-extrabold);
    letter-spacing: 0.05em;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.hamburger-line {
    width: 28px;
    height: 3px;
    background-color: var(--color-gray-900);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex !important;
    align-items: center !important;
    gap: var(--space-1) !important;
    padding: var(--space-4) var(--space-6) !important;
    color: #000000 !important;
    font-weight: 900 !important;
    font-size: 20px !important;
    transition: all var(--transition-fast) !important;
    position: relative !important;
    letter-spacing: 0.05em !important;
    text-transform: uppercase !important;
}

/* WordPress menu items - Elegant & Professional */
.nav-menu .menu-item a {
    display: inline-block !important;
    padding: 14px 24px !important;
    color: #1a202c !important;
    font-weight: 700 !important;
    font-size: 18px !important;
    transition: all 0.3s ease !important;
    position: relative !important;
    letter-spacing: 0.5px !important;
    text-decoration: none !important;
}

.nav-menu .menu-item a::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 24px;
    right: 24px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), #c74854);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 2px;
}

.nav-menu .menu-item a:hover {
    color: var(--color-primary) !important;
}

.nav-menu .menu-item a:hover::after {
    transform: scaleX(1);
}

.nav-menu .current-menu-item a {
    color: var(--color-primary) !important;
}

.nav-menu .current-menu-item a::after {
    transform: scaleX(1);
}


.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), #c74854);
    transition: width var(--transition-base);
    border-radius: var(--radius-full);
}

.nav-link:hover,
.nav-item.active .nav-link,
.nav-item.current-menu-item .nav-link {
    color: var(--color-primary);
}

.nav-link:hover::after,
.nav-item.active .nav-link::after,
.nav-item.current-menu-item .nav-link::after {
    width: 80%;
}

.dropdown-icon {
    transition: transform var(--transition-fast);
}

.nav-item.dropdown:hover .dropdown-icon,
.dropdown-toggle[aria-expanded="true"] .dropdown-icon {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.nav-item.dropdown:hover .dropdown-menu,
.dropdown-toggle[aria-expanded="true"]+.dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: block;
    padding: var(--space-3) var(--space-4);
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.dropdown-link:hover {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

/* Language Switcher */
/* Language switcher styles moved to navigation.css for better organization */

/* ==========================================
   Radio Wave Background Animation
   ========================================== */

.radio-waves-bg {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 300px;
    opacity: 0.05;
    pointer-events: none;
    z-index: 0;
}

.wave-svg {
    width: 100%;
    height: 100%;
}

.wave-path {
    fill: var(--color-primary);
}

.wave-1 {
    animation: wave-animation 8s ease-in-out infinite;
}

.wave-2 {
    animation: wave-animation 10s ease-in-out infinite reverse;
}

.wave-3 {
    animation: wave-animation 12s ease-in-out infinite;
}

@keyframes wave-animation {

    0%,
    100% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(-25px);
    }
}

/* ==========================================
   Hero Section
   ========================================== */

.hero-section {
    padding: var(--space-16) 0;
    background: #ffffff;
    position: relative;
    overflow: hidden;
    border-bottom: 3px solid var(--color-primary);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 20%;
    right: 15%;
    width: 400px;
    height: 400px;
    background:
        radial-gradient(circle, transparent 30%, rgba(158, 48, 57, 0.15) 30%, rgba(158, 48, 57, 0.15) 32%, transparent 32%),
        radial-gradient(circle, transparent 45%, rgba(158, 48, 57, 0.12) 45%, rgba(158, 48, 57, 0.12) 47%, transparent 47%),
        radial-gradient(circle, transparent 60%, rgba(158, 48, 57, 0.09) 60%, rgba(158, 48, 57, 0.09) 62%, transparent 62%),
        radial-gradient(circle, transparent 75%, rgba(158, 48, 57, 0.06) 75%, rgba(158, 48, 57, 0.06) 77%, transparent 77%);
    animation: radio-pulse 3s ease-out infinite;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: 15%;
    left: 10%;
    width: 350px;
    height: 350px;
    background:
        radial-gradient(circle, transparent 35%, rgba(245, 158, 11, 0.12) 35%, rgba(245, 158, 11, 0.12) 37%, transparent 37%),
        radial-gradient(circle, transparent 50%, rgba(245, 158, 11, 0.09) 50%, rgba(245, 158, 11, 0.09) 52%, transparent 52%),
        radial-gradient(circle, transparent 65%, rgba(245, 158, 11, 0.06) 65%, rgba(245, 158, 11, 0.06) 67%, transparent 67%);
    animation: radio-pulse 3.5s ease-out infinite 0.5s;
}

@keyframes radio-pulse {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }

    50% {
        opacity: 1;
    }

    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

.hero-section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
    max-width: 1100px;
}

.hero-content {
    z-index: 1;
    max-width: 500px;
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: var(--font-extrabold);
    line-height: 1.15;
    margin-bottom: var(--space-6);
    color: var(--color-gray-900);
}

.hero-subtitle {
    font-size: var(--text-lg);
    line-height: 1.65;
    color: var(--color-gray-700);
    margin-bottom: var(--space-8);
}

.hero-ctas {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-logo {
    max-width: 350px;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
}

.frequency-display {
    position: absolute;
    bottom: 20%;
    right: 5%;
    display: flex;
    gap: var(--space-2);
    align-items: flex-end;
}

.frequency-line {
    width: 6px;
    background: linear-gradient(to top, var(--color-primary), #c74854);
    border-radius: var(--radius-full);
    animation: frequency-pulse 1.5s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(158, 48, 57, 0.3);
}

.frequency-line:nth-child(1) {
    height: 40px;
    animation-delay: 0s;
}

.frequency-line:nth-child(2) {
    height: 60px;
    animation-delay: 0.2s;
}

.frequency-line:nth-child(3) {
    height: 80px;
    animation-delay: 0.4s;
}

.frequency-line:nth-child(4) {
    height: 50px;
    animation-delay: 0.6s;
}

.frequency-line:nth-child(5) {
    height: 30px;
    animation-delay: 0.8s;
}

@keyframes frequency-pulse {

    0%,
    100% {
        transform: scaleY(0.8);
        opacity: 0.6;
    }

    50% {
        transform: scaleY(1);
        opacity: 1;
    }
}

/* ==========================================
   Section Styles
   ========================================== */

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-12);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
}

.section-title.center {
    text-align: center;
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--space-12);
}

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

.link-with-arrow {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-semibold);
    color: var(--color-primary);
    transition: gap var(--transition-fast);
}

.link-with-arrow:hover {
    gap: var(--space-3);
}

.arrow-icon {
    transition: transform var(--transition-fast);
}

.link-with-arrow:hover .arrow-icon {
    transform: translateX(4px);
}

/* ==========================================
   Footer
   ========================================== */

.site-footer {
    background-color: #ffffff !important;
    color: var(--color-gray-700) !important;
    padding: var(--space-16) 0 var(--space-8);
    border-top: 3px solid var(--color-primary);
    border-bottom: 4px solid var(--color-primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.footer-heading {
    color: var(--color-gray-900) !important;
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-6);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-text {
    font-size: var(--text-sm);
    line-height: 1.8;
    margin-bottom: var(--space-4);
    color: var(--color-gray-700) !important;
}

.footer-text a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-medium);
}

.footer-text a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.footer-links a {
    color: var(--color-gray-700);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: 6px;
    transform: translateX(2px);
}

.footer-iaru-logo {
    max-width: 120px;
    margin-top: var(--space-6);
}

.social-links {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: var(--color-white);
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
}

.social-link:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-200);
    margin-top: var(--space-8);
}

.copyright {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.footer-bottom-links {
    display: flex;
    gap: var(--space-6);
    align-items: center;
}

.footer-bottom-links a {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
    font-weight: var(--font-medium);
}

.footer-bottom-links a:hover {
    color: var(--color-primary);
}

.separator {
    color: var(--color-gray-300);
}

/* ==========================================
   Back to Top Button
   ========================================== */

.back-to-top {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-4px);
}

.back-to-top:active {
    transform: translateY(-2px);
}