/* ============================================
   NATIONAL MEDIA - SHARED CSS VARIABLES
   ============================================ */

:root {
    /* Brand Colors */
    --navy-primary: #083050;
    --navy-dark: #051e33;
    --navy-light: #0a4a6e;
    --cyan-primary: #00aeef;
    --cyan-dark: #0284c7;
    --cyan-light: #40c4ff;
    --cyan-electric: #00FFDC;
    
    /* Neutral Colors */
    --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;
    
    /* Slate Colors */
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --blue-900: #1e3a8a;
    --blue-800: #1e40af;
    
    /* Red Accent */
    --red-primary: #dc2626;
    --red-dark: #991b1b;
    
    /* Glass Effects */
    --glass-white: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px 0 rgba(8, 48, 80, 0.1);
    
    /* Animation Curves */
    --spring-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --spring-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --spring-elastic: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
    --transition-base: 400ms var(--spring-smooth);
    --transition-slow: 800ms var(--ease-out-expo);
    --transition-fast: 200ms var(--spring-smooth);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 28px rgba(0,0,0,0.10);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.12);
    
    /* Layout */
    --container-max-width: 1400px;
    --nav-height: 80px;
    --nav-height-scrolled: 72px;
    
    /* Z-Index System */
    --z-texture: 1;
    --z-content: 10;
    --z-card: 20;
    --z-card-hover: 30;
    --z-sticky: 100;
    --z-dropdown: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-nav: 1000;
    --z-tooltip: 1100;
    --z-grain: 9999;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--navy-primary);
    background: white;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}

/* Global Grain Texture */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.015;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.9' seed='2' numOctaves='1'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
    z-index: var(--z-grain);
    mix-blend-mode: overlay;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
    z-index: var(--z-content);
}

/* ============================================
   SHARED NAVIGATION STYLES
   ============================================ */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(229, 231, 235, 0.5);
    z-index: var(--z-nav);
    height: var(--nav-height);
    transition: all var(--transition-base);
}

nav.scrolled {
    height: var(--nav-height-scrolled);
    box-shadow: 0 2px 20px rgba(8, 48, 80, 0.06);
}

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

.logo {
    font-size: 18px;
    font-weight: 900;
    letter-spacing: -0.01em;
    text-transform: uppercase;
    color: var(--navy-primary);
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: translateX(2px);
}

.logo-image {
    height: 40px;
    width: auto;
}

.logo-fallback {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-mark {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--cyan-primary), var(--cyan-dark));
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    transition: transform var(--transition-base);
}

.logo:hover .logo-mark {
    transform: rotate(90deg) scale(1.05);
}

.nav-links {
    display: flex;
    gap: 48px;
    align-items: center;
}

.nav-links a {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    position: relative;
    padding: 4px 0;
    transition: color var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--cyan-primary);
    transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--navy-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.cta-button,
.nav-cta {
    background: var(--navy-primary);
    color: white;
    padding: 14px 32px;
    border: none;
    font-weight: 700;
    font-size: 12px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.cta-button::before,
.nav-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--cyan-light);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.6s var(--ease-out-expo);
}

.cta-button:hover::before,
.nav-cta:hover::before {
    width: 300%;
    height: 300%;
}

.cta-button:hover,
.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(64, 196, 255, 0.3);
    background: var(--cyan-light);
}

.cta-button span,
.nav-cta span {
    position: relative;
    z-index: 1;
}

/* ============================================
   SHARED FOOTER STYLES
   ============================================ */
.footer-bridge {
    min-height: 60vh;
    background: linear-gradient(180deg, #041c2e 0%, var(--navy-primary) 50%, #041c2e 100%);
    padding: 100px 0 60px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.bridge-texture {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 60px,
            rgba(255, 255, 255, 0.02) 60px,
            rgba(255, 255, 255, 0.02) 61px
        );
    pointer-events: none;
    z-index: 1;
}

.bridge-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.bridge-headline {
    margin-bottom: 48px;
}

.bridge-statement {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    color: white;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.bridge-emphasis {
    color: var(--cyan-primary);
    position: relative;
}

.bridge-subtext {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.bridge-cta {
    margin-bottom: 60px;
}

.bridge-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 48px;
    background: var(--cyan-primary);
    color: white;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.bridge-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--cyan-light);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.6s var(--ease-out-expo);
}

.bridge-button:hover::before {
    width: 300%;
    height: 300%;
}

.bridge-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(64, 196, 255, 0.3);
    background: var(--cyan-light);
}

.bridge-button span,
.bridge-arrow {
    position: relative;
    z-index: 1;
}

.bridge-arrow {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
}

.bridge-button:hover .bridge-arrow {
    transform: translateX(4px);
}

.bridge-note {
    margin-top: 16px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 500;
}

.bridge-note a {
    color: var(--cyan-primary);
}

.footer-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

.footer-tag {
    color: rgba(255, 255, 255, 0.5);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 12px;
}

.footer-contact {
    margin-top: 8px;
}

.footer-contact a {
    color: var(--cyan-primary);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-contact a:hover {
    color: var(--cyan-light);
}

/* ============================================
   PROBLEM PAGE FOOTER STYLES (Reference Design)
   ============================================ */
.footer-problem {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--navy-primary) 0%, var(--navy-dark) 100%);
    position: relative;
    overflow: hidden;
}

/* Subtle animated texture */
.footer-problem__texture {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 100px,
            rgba(255, 255, 255, 0.01) 100px,
            rgba(255, 255, 255, 0.01) 101px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 100px,
            rgba(0, 174, 239, 0.01) 100px,
            rgba(0, 174, 239, 0.01) 101px
        );
    pointer-events: none;
}

.footer-problem__content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.footer-problem__title {
    font-size: clamp(2.5rem, 4.5vw, 4rem);
    font-weight: 900;
    color: white;
    margin-bottom: 24px;
    line-height: 1.1;
    letter-spacing: -0.03em;
    text-align: left;
}

.footer-problem__accent {
    display: block;
    color: var(--cyan-primary);
    position: relative;
}

/* Animated underline effect */
.footer-problem__accent::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--cyan-primary), var(--cyan-dark), var(--cyan-primary));
    background-size: 200% 100%;
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.footer-problem__description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 48px;
    max-width: 600px;
    text-align: left;
    line-height: 1.5;
}

.footer-problem__cta-wrapper {
    margin-top: 24px;
}

.footer-problem__link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    background: var(--cyan-primary);
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
    border: none;
    transform: translateZ(0);
    will-change: transform, box-shadow;
}

.footer-problem__link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--cyan-dark);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                height 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: width, height;
}

.footer-problem__link:hover::before {
    width: 300%;
    height: 300%;
}

.footer-problem__link:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 174, 239, 0.4);
}

.footer-problem__link span {
    position: relative;
    z-index: 1;
}

.footer-problem__arrow {
    transition: transform var(--transition-base);
    position: relative;
    z-index: 1;
}

.footer-problem__link:hover .footer-problem__arrow {
    transform: translateX(4px);
}

/* Bottom copyright/legal */
.footer-problem__bottom {
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-problem__bottom .footer-info {
    text-align: center;
}

.footer-problem__bottom .footer-tag {
    color: rgba(255, 255, 255, 0.5);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 12px;
}

.footer-problem__bottom .footer-contact {
    margin-top: 8px;
}

.footer-problem__bottom .footer-contact a {
    color: var(--cyan-primary);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-problem__bottom .footer-contact a:hover {
    color: var(--cyan-light);
}

/* Responsive for problem footer */
@media (max-width: 768px) {
    .footer-problem {
        padding: 64px 0;
    }
    
    .footer-problem__title {
        font-size: clamp(1.75rem, 5vw, 2.5rem);
        text-align: center;
    }
    
    .footer-problem__accent {
        display: inline;
    }
    
    .footer-problem__accent::after {
        display: none;
    }
    
    .footer-problem__description {
        text-align: center;
        margin-left: auto;
        margin-right: auto;
    }
    
    .footer-problem__cta-wrapper {
        text-align: center;
        display: flex;
        justify-content: center;
    }
    
    .footer-problem__bottom {
        text-align: center;
    }
    
    .footer-problem__bottom .footer-info {
        text-align: center;
    }
}

/* ============================================
   TECHNOLOGY PAGE FOOTER STYLES (Centered)
   ============================================ */
.footer-technology {
    padding: 120px 0;
    background: var(--navy-primary);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.footer-technology__texture {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 100px,
            rgba(255, 255, 255, 0.02) 100px,
            rgba(255, 255, 255, 0.02) 101px
        );
    pointer-events: none;
}

.footer-technology__texture::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, 
        rgba(0, 174, 239, 0.1) 0%, 
        transparent 60%);
    animation: rotate 30s linear infinite reverse;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.footer-technology__content {
    position: relative;
    z-index: 2;
}

.footer-technology__title {
    font-family: 'Oswald', 'Inter', sans-serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
    color: white;
}

.footer-technology__highlight {
    color: var(--cyan-primary);
    position: relative;
    display: inline-block;
}

.footer-technology__highlight::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--cyan-primary);
}

.footer-technology__description {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 48px;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

.footer-technology__button {
    display: inline-block;
    padding: 18px 48px;
    background: linear-gradient(135deg, var(--cyan-primary), var(--cyan-dark));
    color: white;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    text-decoration: none;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.footer-technology__button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.6s ease;
}

.footer-technology__button:hover::before {
    width: 300px;
    height: 300px;
}

.footer-technology__button:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 16px 32px rgba(0, 174, 239, 0.3);
}

.footer-technology__bottom {
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-technology__bottom .footer-info {
    text-align: center;
}

.footer-technology__bottom .footer-tag {
    color: rgba(255, 255, 255, 0.5);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 12px;
}

.footer-technology__bottom .footer-contact {
    margin-top: 8px;
}

.footer-technology__bottom .footer-contact a {
    color: var(--cyan-primary);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-technology__bottom .footer-contact a:hover {
    color: var(--cyan-light);
}

/* Responsive for technology footer */
@media (max-width: 768px) {
    .footer-technology {
        padding: 80px 0;
    }
    
    .footer-technology__title {
        font-size: 2rem;
        margin-bottom: 20px;
    }
    
    .footer-technology__description {
        font-size: 16px;
        margin-bottom: 36px;
    }
    
    .footer-technology__button {
        padding: 16px 36px;
        font-size: 12px;
        width: 100%;
        max-width: 280px;
    }
}

/* ============================================
   RESPONSIVE - SHARED
   ============================================ */
@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
        --nav-height-scrolled: 60px;
    }
    
    .container {
        padding: 0 20px;
    }
    
    .nav-links {
        display: none;
    }
    
    .logo-image {
        height: 32px;
    }
    
    .cta-button,
    .nav-cta {
        padding: 12px 24px;
        font-size: 11px;
    }
    
    .bridge-statement {
        font-size: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
        padding-top: 32px;
    }
}

/* Focus styles for accessibility */
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--cyan-primary);
    outline-offset: 2px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--gray-400), var(--gray-500));
    border-radius: 10px;
    border: 2px solid var(--gray-100);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--gray-500), var(--gray-600));
}