/* ============================================
   IDEAL Sicherheitstechnik – Landing Page CSS
   Mobile-first, performance-optimized
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    --color-red: #c8102e;
    --color-red-dark: #a00d24;
    --color-red-light: #e8354d;
    --color-black: #111111;
    --color-dark: #1a1a1a;
    --color-gray-900: #222222;
    --color-gray-800: #333333;
    --color-gray-700: #444444;
    --color-gray-600: #555555;
    --color-gray-500: #666666;
    --color-gray-400: #888888;
    --color-gray-300: #aaaaaa;
    --color-gray-200: #d4d4d4;
    --color-gray-100: #eeeeee;
    --color-gray-50: #f7f7f7;
    --color-white: #ffffff;
    --color-whatsapp: #25d366;
    --color-whatsapp-dark: #1da851;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-md: 1.125rem;
    --fs-lg: 1.25rem;
    --fs-xl: 1.5rem;
    --fs-2xl: 1.875rem;
    --fs-3xl: 2.25rem;
    --fs-4xl: 3rem;

    --fw-normal: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;
    --fw-extrabold: 800;

    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 50px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 50px rgba(0,0,0,0.15);

    --header-height: 72px;
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--color-gray-800);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.25;
    color: var(--color-black);
    font-weight: var(--fw-bold);
}

/* ---------- Container ---------- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-family);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    padding: 14px 28px;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    justify-content: center;
    white-space: nowrap;
    line-height: 1.2;
}

.btn-primary {
    background: var(--color-red);
    color: var(--color-white);
    border-color: var(--color-red);
}
.btn-primary:hover {
    background: var(--color-red-dark);
    border-color: var(--color-red-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--color-black);
    border-color: var(--color-gray-300);
}
.btn-outline:hover {
    border-color: var(--color-red);
    color: var(--color-red);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255,255,255,0.4);
}
.btn-outline-light:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--color-white);
}

.btn-whatsapp {
    background: var(--color-whatsapp);
    color: var(--color-white);
    border-color: var(--color-whatsapp);
}
.btn-whatsapp:hover {
    background: var(--color-whatsapp-dark);
    border-color: var(--color-whatsapp-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.35);
}

.btn-full {
    width: 100%;
}

.btn-large {
    padding: 16px 36px;
    font-size: var(--fs-md);
}

/* ==========================================
   HEADER
   ========================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.97);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-gray-100);
    height: var(--header-height);
    transition: box-shadow var(--transition);
}
.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--fs-md);
    color: var(--color-black);
    z-index: 1001;
}
.logo strong {
    font-weight: var(--fw-extrabold);
    color: var(--color-red);
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}
.main-nav a {
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-gray-700);
    padding: 6px 0;
    position: relative;
}
.main-nav a:hover {
    color: var(--color-red);
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-red);
    transition: width var(--transition);
}
.main-nav a:hover::after {
    width: 100%;
}
.nav-cta {
    background: var(--color-red) !important;
    color: var(--color-white) !important;
    padding: 10px 20px !important;
    border-radius: var(--radius-full) !important;
    font-weight: var(--fw-semibold) !important;
}
.nav-cta:hover {
    background: var(--color-red-dark) !important;
}
.nav-cta::after {
    display: none !important;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}
.menu-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--color-black);
    border-radius: 2px;
    transition: all var(--transition);
}
.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================
   HERO
   ========================================== */
.hero {
    padding: calc(var(--header-height) + var(--spacing-3xl)) 0 var(--spacing-4xl);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(200, 16, 46, 0.04) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-brand {
    display: inline-block;
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-red);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.hero h1 {
    font-size: var(--fs-2xl);
    font-weight: var(--fw-extrabold);
    line-height: 1.2;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.hero-sub {
    font-size: var(--fs-md);
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.hero-trust {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
}
.hero-trust li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-gray-700);
}

.hero-visual {
    display: none;
}
.hero-image-placeholder {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-gray-50), var(--color-white));
    border: 2px dashed var(--color-gray-200);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin: 0 auto;
}
.hero-image-placeholder p {
    font-size: var(--fs-sm);
    color: var(--color-gray-400);
    font-weight: var(--fw-medium);
}

/* ==========================================
   SECTION COMMON
   ========================================== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--spacing-2xl);
}
.section-header h2 {
    font-size: var(--fs-xl);
    font-weight: var(--fw-extrabold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}
.section-header p {
    font-size: var(--fs-md);
    color: var(--color-gray-600);
}

.section-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

/* ==========================================
   SERVICES
   ========================================== */
.services {
    background: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--color-red);
    transition: height var(--transition);
}
.service-card:hover {
    border-color: var(--color-gray-200);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.service-card:hover::before {
    height: 100%;
}

.service-icon {
    margin-bottom: var(--spacing-md);
    width: 56px;
    height: 56px;
    background: rgba(200, 16, 46, 0.06);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-card h3 {
    font-size: var(--fs-md);
    font-weight: var(--fw-bold);
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}
.service-card p {
    font-size: var(--fs-sm);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ==========================================
   PROBLEMS
   ========================================== */
.problems {
    background: var(--color-gray-50);
}

.problems-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.problem-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-red);
    transition: all var(--transition);
}
.problem-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.problem-icon {
    font-size: var(--fs-xl);
    margin-bottom: var(--spacing-sm);
}

.problem-card h3 {
    font-size: var(--fs-md);
    font-weight: var(--fw-bold);
    margin-bottom: var(--spacing-xs);
}
.problem-card p {
    font-size: var(--fs-sm);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ==========================================
   SOLUTIONS
   ========================================== */
.solutions {
    background: var(--color-white);
}

.solutions-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.solution-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}
.solution-item:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
}

.solution-number {
    font-size: var(--fs-3xl);
    font-weight: var(--fw-extrabold);
    color: var(--color-red);
    opacity: 0.2;
    line-height: 1;
    min-width: 50px;
}

.solution-content h3 {
    font-size: var(--fs-md);
    font-weight: var(--fw-bold);
    margin-bottom: var(--spacing-xs);
}
.solution-content p {
    font-size: var(--fs-sm);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ==========================================
   WHY IDEAL
   ========================================== */
.why-ideal {
    background: var(--color-dark);
    color: var(--color-white);
}
.why-ideal .section-header h2 {
    color: var(--color-white);
}
.why-ideal .section-header p {
    color: var(--color-gray-300);
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.why-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    transition: all var(--transition);
}
.why-card:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(200, 16, 46, 0.3);
}

.why-icon {
    margin-bottom: var(--spacing-md);
    width: 52px;
    height: 52px;
    background: rgba(200, 16, 46, 0.15);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.why-card h3 {
    font-size: var(--fs-md);
    font-weight: var(--fw-bold);
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}
.why-card p {
    font-size: var(--fs-sm);
    color: var(--color-gray-300);
    line-height: 1.7;
}

/* ==========================================
   VISUAL PROOF
   ========================================== */
.visual-proof {
    background: var(--color-gray-50);
}

.proof-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.proof-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}
.proof-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.proof-image-placeholder {
    width: 100%;
    aspect-ratio: 3/2;
    background: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
}

.proof-card img {
    width: 100%;
    aspect-ratio: 3/2;
    object-fit: cover;
}
/* Hide placeholder when image loads */
.proof-card img + .proof-image-placeholder,
.proof-card img[src] ~ .proof-image-placeholder {
    display: none;
}

.proof-caption {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-gray-700);
}

/* ==========================================
   TESTIMONIALS
   ========================================== */
.testimonials {
    background: var(--color-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.testimonial-card {
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition);
}
.testimonial-card:hover {
    box-shadow: var(--shadow-md);
}

.testimonial-stars {
    color: #f5a623;
    font-size: var(--fs-lg);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 2px;
}

.testimonial-card blockquote p {
    font-size: var(--fs-base);
    color: var(--color-gray-700);
    line-height: 1.7;
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.testimonial-author strong {
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    color: var(--color-black);
}
.testimonial-author span {
    font-size: var(--fs-xs);
    color: var(--color-gray-500);
}

/* ==========================================
   FAQ
   ========================================== */
.faq {
    background: var(--color-gray-50);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    transition: all var(--transition);
}
.faq-item:hover {
    border-color: var(--color-gray-200);
}

.faq-item summary {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    color: var(--color-black);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    list-style: none;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::after {
    content: '+';
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--color-red);
    flex-shrink: 0;
    transition: transform var(--transition);
}
.faq-item[open] summary::after {
    content: '−';
}
.faq-item[open] summary {
    border-bottom: 1px solid var(--color-gray-100);
}

.faq-answer {
    padding: var(--spacing-lg) var(--spacing-xl);
}
.faq-answer p {
    font-size: var(--fs-sm);
    color: var(--color-gray-600);
    line-height: 1.8;
}

/* ==========================================
   CONTACT SECTION
   ========================================== */
.contact {
    background: var(--color-white);
    padding: var(--spacing-4xl) 0;
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
}

.contact-info h2 {
    font-size: var(--fs-xl);
    margin-bottom: var(--spacing-md);
}
.contact-info > p {
    font-size: var(--fs-base);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

.contact-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}
.contact-benefits li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-gray-700);
}

.contact-direct {
    border-top: 1px solid var(--color-gray-100);
    padding-top: var(--spacing-lg);
}
.contact-direct > p {
    font-size: var(--fs-sm);
    margin-bottom: var(--spacing-sm);
}
.contact-link {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-gray-700);
    padding: 8px 0;
}
.contact-link:hover {
    color: var(--color-red);
}
.whatsapp-link {
    color: var(--color-whatsapp-dark);
}
.whatsapp-link:hover {
    color: var(--color-whatsapp);
}

/* Lead Form */
.contact-form-wrapper {
    position: relative;
}

.lead-form {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-md);
}
.form-group label {
    display: block;
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-gray-800);
    margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    font-family: var(--font-family);
    font-size: var(--fs-base);
    padding: 14px 16px;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-black);
    transition: border-color var(--transition), box-shadow var(--transition);
    -webkit-appearance: none;
    appearance: none;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-red);
    box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}
.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-note {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: var(--fs-xs);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(200, 16, 46, 0.03);
    border-radius: var(--radius-sm);
}
.form-note svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.form-privacy {
    font-size: var(--fs-xs);
    color: var(--color-gray-500);
    text-align: center;
    margin-top: var(--spacing-sm);
}
.form-privacy a {
    color: var(--color-red);
    text-decoration: underline;
}

.form-success {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
}
.form-success h3 {
    font-size: var(--fs-xl);
    margin: var(--spacing-md) 0 var(--spacing-sm);
}
.form-success p {
    color: var(--color-gray-600);
}

/* ==========================================
   FINAL CTA
   ========================================== */
.final-cta {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-black) 100%);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-4xl) 0;
    position: relative;
    overflow: hidden;
}
.final-cta::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(200, 16, 46, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.final-cta h2 {
    font-size: var(--fs-2xl);
    font-weight: var(--fw-extrabold);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    position: relative;
}
.final-cta p {
    font-size: var(--fs-md);
    color: var(--color-gray-300);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    position: relative;
}

.final-cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
}

/* ==========================================
   FOOTER
   ========================================== */
.site-footer {
    background: var(--color-black);
    color: var(--color-gray-400);
    padding: var(--spacing-3xl) 0 0;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-2xl);
}

.footer-brand {
    font-size: var(--fs-md);
    color: var(--color-white);
}
.footer-brand strong {
    color: var(--color-red);
    font-weight: var(--fw-extrabold);
}
.footer-brand p {
    font-size: var(--fs-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
    line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
}
.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}
.footer-links a {
    font-size: var(--fs-sm);
    color: var(--color-gray-400);
    transition: color var(--transition);
}
.footer-links a:hover {
    color: var(--color-red);
}

.footer-contact p {
    font-size: var(--fs-sm);
    line-height: 1.6;
    margin-bottom: var(--spacing-xs);
}
.footer-contact a {
    color: var(--color-gray-400);
}
.footer-contact a:hover {
    color: var(--color-red);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: var(--spacing-lg) 0;
}
.footer-bottom p {
    font-size: var(--fs-xs);
    color: var(--color-gray-600);
    text-align: center;
}

/* ==========================================
   MOBILE STICKY CTA BAR
   ========================================== */
.mobile-cta-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    display: flex;
    background: var(--color-white);
    border-top: 1px solid var(--color-gray-100);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    padding-bottom: env(safe-area-inset-bottom, 0);
}
.mobile-cta-bar.visible {
    transform: translateY(0);
}

.mobile-cta-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 10px 8px;
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: var(--color-gray-700);
    text-decoration: none;
    transition: all var(--transition);
}
.mobile-cta-btn:hover,
.mobile-cta-btn:active {
    background: var(--color-gray-50);
}
.cta-call {
    color: var(--color-red);
}
.cta-whatsapp {
    color: var(--color-whatsapp-dark);
}
.cta-form {
    color: var(--color-gray-700);
}

/* ==========================================
   FLOATING WHATSAPP (Desktop)
   ========================================== */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 998;
    width: 60px;
    height: 60px;
    background: var(--color-whatsapp);
    border-radius: 50%;
    display: none;  /* hidden on mobile, shown on larger screens */
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    transition: all var(--transition);
}
.whatsapp-float:hover {
    background: var(--color-whatsapp-dark);
    transform: scale(1.08);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
}

/* ==========================================
   RESPONSIVE – TABLET (≥640px)
   ========================================== */
@media (min-width: 640px) {
    .hero h1 {
        font-size: var(--fs-3xl);
    }
    .section-header h2 {
        font-size: var(--fs-2xl);
    }

    .hero-trust {
        grid-template-columns: 1fr 1fr;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .problems-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .proof-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-inner {
        grid-template-columns: repeat(2, 1fr);
    }

    .final-cta h2 {
        font-size: var(--fs-3xl);
    }
}

/* ==========================================
   RESPONSIVE – DESKTOP (≥1024px)
   ========================================== */
@media (min-width: 1024px) {
    section {
        padding: var(--spacing-4xl) 0;
    }

    .hero {
        padding: calc(var(--header-height) + var(--spacing-4xl)) 0 var(--spacing-4xl);
    }
    .hero-inner {
        grid-template-columns: 1.2fr 0.8fr;
    }
    .hero-visual {
        display: block;
    }
    .hero h1 {
        font-size: var(--fs-4xl);
    }

    .menu-toggle {
        display: none !important;
    }

    .section-header h2 {
        font-size: var(--fs-3xl);
    }

    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .problems-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .solutions-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .why-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .proof-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .contact-inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-3xl);
        align-items: start;
    }
    .contact-info h2 {
        font-size: var(--fs-2xl);
    }

    .footer-inner {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
    }

    .final-cta h2 {
        font-size: var(--fs-4xl);
    }

    /* Desktop: Hide mobile CTA bar, show floating WhatsApp */
    .mobile-cta-bar {
        display: none !important;
    }
    .whatsapp-float {
        display: flex;
    }

    /* Desktop: Ensure footer has bottom padding for no mobile bar */
    .site-footer {
        padding-bottom: 0;
    }
}

/* ==========================================
   RESPONSIVE – MOBILE NAV (< 1024px)
   ========================================== */
@media (max-width: 1023px) {
    .menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        max-width: 360px;
        height: 100vh;
        height: 100dvh;
        background: var(--color-white);
        box-shadow: var(--shadow-xl);
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 1000;
        padding: calc(var(--header-height) + var(--spacing-lg)) var(--spacing-xl) var(--spacing-xl);
        overflow-y: auto;
    }
    .main-nav.open {
        transform: translateX(0);
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    .main-nav a {
        display: block;
        font-size: var(--fs-md);
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--color-gray-100);
    }
    .main-nav a::after {
        display: none;
    }
    .nav-cta {
        margin-top: var(--spacing-md);
        text-align: center;
    }

    /* Body scroll lock when nav open */
    body.nav-open {
        overflow: hidden;
    }

    /* Overlay behind mobile nav */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.4);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    .nav-overlay.visible {
        opacity: 1;
        visibility: visible;
    }

    /* Account for mobile CTA bar */
    .site-footer {
        padding-bottom: 72px;
    }
}

/* ==========================================
   ANIMATIONS (reduced motion safe)
   ========================================== */
@media (prefers-reduced-motion: no-preference) {
    .service-card,
    .problem-card,
    .solution-item,
    .why-card,
    .proof-card,
    .testimonial-card {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.5s ease, transform 0.5s ease, box-shadow var(--transition);
    }
    .service-card.visible,
    .problem-card.visible,
    .solution-item.visible,
    .why-card.visible,
    .proof-card.visible,
    .testimonial-card.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* ==========================================
   PRINT
   ========================================== */
@media print {
    .site-header,
    .mobile-cta-bar,
    .whatsapp-float,
    .menu-toggle,
    .hero-ctas,
    .section-cta,
    .final-cta-buttons,
    .nav-cta {
        display: none !important;
    }
    body {
        font-size: 12pt;
        color: #000;
    }
    section {
        page-break-inside: avoid;
        padding: 1em 0;
    }
}