/* ============================================
   TrustLink Buzz — Main Stylesheet
   Color Palette: Deep Teal Forest / Warm Rose / Ivory
   ============================================ */

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

/* ---------- VARIABLES ---------- */
:root {
    --color-primary: #1B4D3E;
    --color-primary-light: #2A6B56;
    --color-primary-dark: #14362C;
    --color-accent: #C47A6B;
    --color-accent-light: #D68F7E;
    --color-accent-dark: #A85C4E;
    --color-bg: #FBF8F3;
    --color-bg-alt: #F0EDE8;
    --color-text: #1E1F24;
    --color-text-light: #5A5D66;
    --color-text-on-dark: #F5F1EB;
    --color-border: #E0DBD3;
    --color-white: #FFFFFF;
    --font-heading: Georgia, 'Times New Roman', serif;
    --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

/* ---------- BASE ---------- */
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent); }

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

/* ---------- NAVIGATION ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 0;
    height: 72px;
    display: flex;
    align-items: center;
}

.nav-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: -0.5px;
    display: flex;
    align-items: baseline;
    gap: 0;
}
.nav-logo span { color: var(--color-accent); }

.nav-back {
    font-size: 15px;
    color: var(--color-primary);
    font-weight: 500;
    padding: 8px 16px;
    border: 2px solid var(--color-primary);
    border-radius: 6px;
    transition: all 0.2s;
}
.nav-back:hover { background-color: var(--color-primary); color: var(--color-white); }

.nav-menu { display: flex; align-items: center; gap: 8px; }

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-light);
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.2s;
}
.nav-link:hover,
.nav-link.active { color: var(--color-primary); background-color: var(--color-bg-alt); }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-primary-dark);
    border-radius: 2px;
    transition: all 0.3s;
}
.hamburger { position: relative; }
.hamburger::before,
.hamburger::after { content: ''; position: absolute; left: 0; }
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.nav-toggle.active .hamburger { background-color: transparent; }
.nav-toggle.active .hamburger::before { top: 0; transform: rotate(45deg); }
.nav-toggle.active .hamburger::after { top: 0; transform: rotate(-45deg); }

/* ---------- HERO SECTION ---------- */
.hero-section {
    padding: 140px 0 100px;
    background-color: var(--color-bg);
    position: relative;
    overflow: hidden;
}
.hero-section::after {
    content: '';
    position: absolute;
    top: -100px;
    right: -200px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: rgba(27,77,62,0.04);
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--color-accent);
    background-color: var(--color-bg-alt);
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-primary-dark);
    margin-bottom: 24px;
}

.hero-text {
    font-size: 17px;
    line-height: 1.75;
    color: var(--color-text-light);
    margin-bottom: 32px;
    max-width: 560px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
    display: inline-block;
    font-size: 15px;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    text-align: center;
    transition: all 0.25s;
    font-family: var(--font-body);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}
.btn-primary:hover { background-color: var(--color-primary-light); color: var(--color-white); }

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}
.btn-outline:hover { background-color: var(--color-primary); color: var(--color-white); }

.btn-full { width: 100%; }

/* Hero Visual */
.hero-visual { position: relative; }

.hero-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    background-color: var(--color-white);
    border-radius: 16px;
    padding: 36px 32px;
    box-shadow: 0 4px 30px rgba(27, 77, 62, 0.08);
    position: relative;
    z-index: 2;
}

.hero-stat { text-align: center; }

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--color-text-light);
    margin-top: 4px;
}

.hero-graphic {
    position: absolute;
    top: -30px;
    right: -40px;
    width: 200px;
    height: 200px;
    z-index: 1;
}

.graphic-node {
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-accent);
}
.node-1 { top: 10px; left: 80px; }
.node-2 { top: 80px; left: 10px; background-color: var(--color-primary); }
.node-3 { top: 80px; left: 150px; background-color: var(--color-primary-light); }

.graphic-line {
    position: absolute;
    background-color: var(--color-border);
}
.line-1 { top: 18px; left: 96px; width: 2px; height: 70px; }
.line-2 { top: 88px; left: 26px; width: 60px; height: 2px; }
.line-3 { top: 88px; left: 106px; width: 50px; height: 2px; }

/* ---------- SECTION HEADER ---------- */
.section-header { text-align: center; margin-bottom: 56px; }

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 38px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 16px;
    line-height: 1.25;
}

.section-subtitle {
    font-size: 17px;
    color: var(--color-text-light);
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ---------- ABOUT SECTION ---------- */
.about-section {
    padding: 100px 0;
    background-color: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.about-card {
    background-color: var(--color-bg);
    border-radius: 12px;
    padding: 36px 28px;
    transition: transform 0.3s, box-shadow 0.3s;
}
.about-card:hover { transform: translateY(-4px); }

.about-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}
.about-icon svg { width: 24px; height: 24px; }

.about-card-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

.about-card-text {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.7;
}

.about-cta { margin-top: 48px; text-align: center; }

.about-summary {
    font-size: 16px;
    color: var(--color-text-light);
    line-height: 1.75;
    max-width: 720px;
    margin: 0 auto;
    padding: 28px 36px;
    background-color: var(--color-bg);
    border-radius: 12px;
    border-left: 4px solid var(--color-accent);
}

/* ---------- SERVICES SECTION ---------- */
.services-section {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background-color: var(--color-white);
    border-radius: 12px;
    padding: 36px 28px;
    border-top: 3px solid var(--color-primary);
    transition: all 0.3s;
}
.service-card:hover {
    box-shadow: 0 8px 30px rgba(27, 77, 62, 0.1);
    border-top-color: var(--color-accent);
}

.service-number {
    font-family: var(--font-heading);
    font-size: 42px;
    font-weight: 700;
    color: #e9efec;
    line-height: 1;
    margin-bottom: 8px;
}

.service-title {
    font-family: var(--font-heading);
    font-size: 19px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 14px;
}

.service-text {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ---------- WHY US SECTION ---------- */
.why-us-section {
    padding: 100px 0;
    background-color: var(--color-primary-dark);
    color: var(--color-text-on-dark);
}

.why-us-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.why-us-section .section-tag { color: var(--color-accent-light); }
.why-us-section .section-title { color: var(--color-white); }

.why-us-text {
    font-size: 16px;
    color: #CDCFC5;
    line-height: 1.7;
    margin-bottom: 32px;
}

.why-us-list { list-style: none; display: flex; flex-direction: column; gap: 20px; }

.why-us-item { display: flex; gap: 16px; align-items: flex-start; }

.why-us-check {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}
.why-us-check svg { width: 16px; height: 16px; color: var(--color-white); }

.why-us-item strong {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 4px;
}
.why-us-item p {
    font-size: 14px;
    color: #C5C7BC;
    line-height: 1.6;
}

.why-us-visual { display: flex; justify-content: center; align-items: center; }

.visual-box {
    position: relative;
    width: 320px;
    height: 320px;
}

.visual-orb {
    position: absolute;
    border-radius: 50%;
}
.orb-1 {
    width: 200px;
    height: 200px;
    background: rgba(196,122,107,0.25);
    top: 0;
    left: 60px;
}
.orb-2 {
    width: 140px;
    height: 140px;
    background: rgba(42,107,86,0.35);
    bottom: 0;
    left: 0;
}
.orb-3 {
    width: 100px;
    height: 100px;
    background: rgba(214,143,126,0.3);
    bottom: 40px;
    right: 0;
}

/* ---------- CONTACT SECTION ---------- */
.contact-section {
    padding: 100px 0;
    background-color: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info .section-title {
    font-size: 34px;
    margin-bottom: 16px;
}

.contact-intro {
    font-size: 16px;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 36px;
}

.contact-details { display: flex; flex-direction: column; gap: 20px; }

.contact-item { display: flex; gap: 16px; align-items: flex-start; }

.contact-icon-wrap {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background-color: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}
.contact-icon-wrap svg { width: 20px; height: 20px; color: var(--color-primary); }

.contact-item strong { display: block; font-size: 14px; font-weight: 600; color: var(--color-text); margin-bottom: 2px; }
.contact-item p { font-size: 15px; color: var(--color-text-light); }

.contact-form-wrap { }

.contact-form {
    background-color: var(--color-bg);
    border-radius: 16px;
    padding: 40px;
}

.form-title {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 24px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #AAA; }

.form-status {
    margin-top: 12px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    min-height: 20px;
}
.form-status.success { color: var(--color-primary); }
.form-status.error { color: var(--color-accent); }

/* ---------- FOOTER ---------- */
.site-footer {
    background-color: var(--color-primary-dark);
    color: var(--color-text-on-dark);
    padding: 60px 0 28px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 14px;
    display: inline-block;
}
.footer-logo span { color: var(--color-accent-light); }

.footer-desc {
    font-size: 14px;
    color: #BFC0B6;
    line-height: 1.65;
    max-width: 280px;
}

.footer-links h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 14px;
}

.footer-links a {
    display: block;
    font-size: 14px;
    color: #BFC0B6;
    padding: 4px 0;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--color-accent-light); }

.footer-links p {
    font-size: 14px;
    color: #BFC0B6;
    padding: 2px 0;
}

.footer-bottom {
    border-top: 1px solid #35473E;
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
    color: #A3A599;
}

.footer-bottom-simple {
    border-top: 1px solid #35473E;
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
    color: #A3A599;
}
.footer-bottom-simple a {
    color: #BFC0B6;
    text-decoration: underline;
}
.footer-bottom-simple a:hover { color: var(--color-accent-light); }

/* ---------- FADE UP ANIMATION ---------- */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .hero-title { font-size: 36px; }
    .section-title { font-size: 30px; }
    .about-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr 1fr; }
    .why-us-grid { grid-template-columns: 1fr; }
    .why-us-visual { display: none; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        border-bottom: 1px solid var(--color-border);
        padding: 16px 24px;
        flex-direction: column;
        gap: 4px;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
    }
    .nav-menu.open { display: flex; }
    .nav-link { width: 100%; padding: 12px 16px; }

    .nav-toggle { display: flex; }

    .hero-section { padding: 120px 0 64px; }
    .hero-title { font-size: 30px; }
    .hero-text { font-size: 16px; }
    .section-title { font-size: 26px; }
    .services-grid { grid-template-columns: 1fr; }

    .contact-form { padding: 28px; }

    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}