/* ========================================
   SGC TECH AI - Mobile-First Base Layer
   PRIORITY: Mobile (320px) → Tablet (768px) → Desktop (1024px+)
   Created: December 8, 2025
   ======================================== */

/* ========================================
   MOBILE-FIRST DESIGN PRINCIPLES:
   1. Base styles = mobile (no media query)
   2. min-width: 768px = tablet enhancements
   3. min-width: 1024px = desktop enhancements
   4. NEVER use max-width for responsive
   5. Touch targets minimum 44x44px
   ======================================== */

/* ========== Mobile Base: Touch Targets ========== */
/* Ensure all interactive elements are touch-friendly */
button,
.btn,
.btn-primary,
.btn-secondary,
.btn-whatsapp,
.filter-btn,
a.btn,
input[type="submit"],
input[type="button"] {
    min-height: 44px;
    min-width: 44px;
    padding: 12px 20px;
    font-size: 16px; /* Prevents iOS zoom on focus */
    touch-action: manipulation; /* Removes 300ms delay */
    -webkit-tap-highlight-color: transparent;
}

/* Form inputs - prevent iOS zoom */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
select,
textarea {
    font-size: 16px;
    min-height: 44px;
    padding: 12px 16px;
    border-radius: 8px;
    width: 100%;
}

/* ========== Mobile Base: Navigation ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 99999;
    background: rgba(12, 30, 52, 0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 255, 240, 0.15);
}

/* Add padding to body to account for fixed header */
body {
    padding-top: 70px;
    background: #0c1e34;
    color: #ffffff;
    min-height: 100vh;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    max-width: 1200px;
    margin: 0 auto;
}

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

/* Mobile: Hamburger menu visible */
.nav-toggle,
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
    align-items: center;
    background: transparent;
    border: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.nav-toggle span,
.hamburger span {
    width: 24px;
    height: 3px;
    background: #ffffff;
    transition: all 0.3s ease;
    border-radius: 2px;
    pointer-events: none;
}

/* Hamburger to X animation */
.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile: Navigation menu hidden by default */
.nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(12, 30, 52, 0.99);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px;
    gap: 8px;
    border-top: 1px solid rgba(0, 255, 240, 0.2);
    z-index: 99998;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.nav-menu.active {
    display: flex;
}

.nav-menu li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 16px;
    color: #ffffff;
    font-weight: 600;
    border-radius: 8px;
    min-height: 44px;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--electric-cyan, #00FFF0);
    background: rgba(0, 255, 240, 0.1);
}

/* Tablet+: Show desktop nav */
@media (min-width: 768px) {
    .nav-toggle,
    .hamburger {
        display: none !important;
    }
    
    .nav-menu {
        display: flex !important;
        position: static;
        flex-direction: row;
        background: transparent;
        padding: 0;
        border-top: none;
        gap: 4px;
        box-shadow: none;
    }
    
    .nav-menu li a {
        padding: 10px 14px;
        font-size: 14px;
    }
    
    .logo-image {
        height: 45px;
    }
}

@media (min-width: 1024px) {
    .nav-menu li a {
        padding: 10px 18px;
        font-size: 15px;
    }
    
    .logo-image {
        height: 50px;
    }
}

/* ========== Mobile Base: Hero Section ========== */
.hero-section,
.page-hero {
    padding: 60px 0 40px;
    text-align: center;
}

.hero-title,
.page-hero h1 {
    font-size: 1.75rem;
    line-height: 1.2;
    margin-bottom: 16px;
}

.hero-subtitle {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 24px;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.hero-cta .btn {
    width: 100%;
    max-width: 300px;
}

@media (min-width: 768px) {
    .hero-section,
    .page-hero {
        padding: 80px 0 60px;
    }
    
    .hero-title,
    .page-hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
    
    .hero-cta .btn {
        width: auto;
    }
}

@media (min-width: 1024px) {
    .hero-section,
    .page-hero {
        padding: 100px 0 80px;
        text-align: left;
    }
    
    .hero-title,
    .page-hero h1 {
        font-size: 3rem;
    }
    
    .hero-cta {
        justify-content: flex-start;
    }
}

/* ========== Mobile Base: Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    min-height: 44px;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--electric-cyan, #00FFF0), #00cccc);
    color: var(--deep-navy, #0c1e34);
    box-shadow: 0 4px 15px rgba(0, 255, 240, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 240, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--electric-cyan, #00FFF0);
    color: var(--electric-cyan, #00FFF0);
}

.btn-whatsapp {
    background: #25D366;
    color: #ffffff;
}

.btn-whatsapp:hover {
    background: #20bd5a;
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

@media (min-width: 768px) {
    .btn {
        padding: 14px 28px;
    }
    
    .btn-large {
        padding: 18px 40px;
    }
}

/* ========== Mobile Base: Cards & Grid ========== */
.card,
.pillar-card,
.pricing-card,
.case-study,
.problem-card,
.philosophy-card,
.expertise-card {
    background: rgba(255, 255, 255, 0.05);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 16px;
}

/* Mobile: Single column */
.grid,
.pillars-grid,
.pricing-grid,
.problem-grid,
.philosophy-grid,
.expertise-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

/* Tablet: 2 columns */
@media (min-width: 768px) {
    .grid,
    .pillars-grid,
    .problem-grid,
    .philosophy-grid,
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop: 3-4 columns */
@media (min-width: 1024px) {
    .pillars-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .problem-grid,
    .philosophy-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .expertise-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========== Mobile Base: Sections ========== */
section {
    padding: 48px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 32px;
}

.section-header h2 {
    font-size: 1.5rem;
    line-height: 1.2;
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    section {
        padding: 64px 0;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .section-header {
        margin-bottom: 48px;
    }
}

@media (min-width: 1024px) {
    section {
        padding: 80px 0;
    }
    
    .section-header h2 {
        font-size: 2.5rem;
    }
}

/* ========== Mobile Base: Mobile Sticky Bar ========== */
.mobile-sticky-bar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(12, 30, 52, 0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    padding: 12px 16px;
    padding-bottom: calc(12px + env(safe-area-inset-bottom, 0));
    gap: 12px;
    z-index: 9998;
    border-top: 1px solid rgba(0, 255, 240, 0.2);
}

.mobile-sticky-bar a,
.mobile-sticky-bar button {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 16px;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 8px;
    min-height: 44px;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.btn-whatsapp-sticky {
    background: #25D366;
    color: #ffffff;
}

.btn-roi-sticky,
.btn-appointment-sticky {
    background: linear-gradient(135deg, var(--electric-cyan, #00FFF0), #00cccc);
    color: var(--deep-navy, #0c1e34);
}

/* Hide mobile sticky bar on tablet+ */
@media (min-width: 768px) {
    .mobile-sticky-bar {
        display: none;
    }
}

/* ========== Mobile Base: Footer ========== */
.footer {
    background: var(--deep-navy, #0c1e34);
    color: #ffffff;
    padding: 48px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

/* Footer Logo & Branding Section */
.footer-logo {
    margin-bottom: 16px;
}

.footer-logo a {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    text-decoration: none;
}

.footer-logo .logo-image {
    height: 45px;
    width: auto;
    object-fit: contain;
}

.footer-logo .logo-tagline {
    color: var(--electric-cyan, #00FFF0);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin: 0;
    line-height: 1.3;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.footer-parent {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

.footer-parent i {
    color: var(--electric-cyan, #00FFF0);
}

.footer-col h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--electric-cyan, #00FFF0);
}

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

.footer-col li {
    margin-bottom: 12px;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
    text-decoration: none;
}

.footer-col a:hover {
    color: var(--electric-cyan, #00FFF0);
}

/* Contact list in footer */
.contact-list li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-list i {
    color: var(--electric-cyan, #00FFF0);
    width: 18px;
    text-align: center;
}

.footer-bottom {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom .footer-copyright {
    margin-bottom: 12px;
}

.footer-bottom .footer-links {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.footer-bottom .footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-bottom .footer-links a:hover {
    color: var(--electric-cyan, #00FFF0);
}

@media (min-width: 768px) {
    .footer {
        padding: 64px 0 32px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }
    
    .footer-bottom .footer-copyright {
        margin-bottom: 0;
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
    
    .footer-logo .logo-image {
        height: 50px;
    }
}

/* ========== Mobile Base: Filter Buttons ========== */
.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-bottom: 24px;
}

.filter-btn {
    padding: 10px 16px;
    font-size: 0.875rem;
    font-weight: 600;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 44px;
}

.filter-btn:hover,
.filter-btn.active,
.filter-btn[aria-pressed="true"] {
    background: rgba(0, 255, 240, 0.15);
    border-color: var(--electric-cyan, #00FFF0);
    color: var(--electric-cyan, #00FFF0);
}

@media (min-width: 768px) {
    .filter-btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}

/* ========== Mobile Base: Forms ========== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #ffffff;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    border-radius: 8px;
    transition: border-color 0.3s ease;
    min-height: 44px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--electric-cyan, #00FFF0);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

/* ========== Mobile Base: Comparison Cards ========== */
.comparison-visual {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.comparison-card {
    background: rgba(255, 255, 255, 0.08);
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
    border-radius: 16px;
    padding: 24px;
    border: 2px solid rgba(255, 255, 255, 0.15);
}

.comparison-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    color: var(--electric-cyan, #00FFF0);
    transform: rotate(90deg);
    padding: 8px;
}

@media (min-width: 1024px) {
    .comparison-visual {
        flex-direction: row;
        align-items: stretch;
    }
    
    .comparison-card {
        flex: 1;
    }
    
    .comparison-arrow {
        transform: rotate(0deg);
    }
}

/* ========== Mobile Base: Trust Badges ========== */
.trust-badges {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin: 32px 0;
}

.trust-badge {
    background: rgba(0, 255, 240, 0.08);
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
    border: 2px solid rgba(0, 255, 240, 0.25);
    border-radius: 16px;
    padding: 20px 16px;
    text-align: center;
}

.trust-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--electric-cyan, #00FFF0);
    line-height: 1;
}

.trust-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 8px;
}

@media (min-width: 768px) {
    .trust-badges {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .trust-badge {
        padding: 24px 20px;
    }
    
    .trust-number {
        font-size: 2.5rem;
    }
    
    .trust-label {
        font-size: 0.875rem;
    }
}

/* ========== Mobile Base: Video Embeds ========== */
.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
    border-radius: 12px;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ========== Mobile Spacing for Fixed Elements ========== */
/* Account for mobile sticky bar */
body {
    padding-bottom: 80px;
}

@media (min-width: 768px) {
    body {
        padding-bottom: 0;
    }
}

/* ========== Mobile Base: Cookie Consent Adjustment ========== */
.cookie-consent-banner {
    bottom: 70px; /* Above mobile sticky bar */
}

@media (min-width: 768px) {
    .cookie-consent-banner {
        bottom: 0;
    }
}

/* ========== Print Styles (Accessibility) ========== */
@media print {
    /* Hide non-essential elements */
    .header,
    .footer,
    .mobile-sticky-bar,
    .cookie-consent-banner,
    .whatsapp-float,
    .skip-link,
    nav,
    .nav-toggle,
    button,
    .btn,
    video,
    iframe {
        display: none;
    }
    
    /* Reset backgrounds for printing */
    body,
    section,
    .hero,
    .section {
        background: white;
        color: black;
    }
    
    /* Ensure text is readable */
    h1, h2, h3, h4, h5, h6 {
        color: #000;
        page-break-after: avoid;
    }
    
    p, li {
        color: #333;
        orphans: 3;
        widows: 3;
    }
    
    /* Show URLs after links */
    a[href^="http"]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
    
    /* Page breaks */
    .section,
    .case-study,
    .pricing-card {
        page-break-inside: avoid;
    }
}