/* ============================================
   GraniteSolutions — Style Sheet
   ============================================ */

/* --- CSS Variables --- */
:root {
    --color-dark-navy: #16425B;
    --color-deep-blue: #2F6690;
    --color-medium-blue: #3A7CA5;
    --color-sky-blue: #81C3D7;
    --color-light-gray: #D9DCD6;

    --color-white: #ffffff;
    --color-black: #111111;
    --color-text: #333333;
    --color-text-light: #6b7280;

    --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;

    --container-width: 1200px;
    --header-height: 72px;

    --transition: all 0.3s ease;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --radius: 8px;
    --radius-lg: 16px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    line-height: 1.6;
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
    color: var(--color-medium-blue);
}

ul {
    list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-dark-navy);
    line-height: 1.2;
    font-weight: 700;
}

h1 { font-size: 3.25rem; }
h2 { font-size: 2.5rem; margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p {
    margin-bottom: 1rem;
    color: var(--color-text);
}

/* --- Layout --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 5rem 0;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-align: center;
    line-height: 1.4;
}

.btn-primary {
    background: var(--color-deep-blue);
    color: var(--color-white);
    border-color: var(--color-deep-blue);
}

.btn-primary:hover {
    background: var(--color-medium-blue);
    border-color: var(--color-medium-blue);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-dark-navy);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-deep-blue);
    border-color: var(--color-deep-blue);
}

.btn-outline:hover {
    background: var(--color-deep-blue);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-light {
    background: var(--color-white);
    color: var(--color-dark-navy);
    border-color: var(--color-white);
}

.btn-light:hover {
    background: var(--color-light-gray);
    border-color: var(--color-light-gray);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
    height: var(--header-height);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-dark-navy);
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 32px;
    height: 26px;
    color: var(--color-deep-blue);
    flex-shrink: 0;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.main-nav a {
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-deep-blue);
    transition: var(--transition);
}

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

.main-nav a:hover {
    color: var(--color-deep-blue);
}

.header-cta .btn {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-dark-navy);
    transition: var(--transition);
}

/* Transparent header for hero pages */
.has-hero .site-header {
    background: transparent;
    box-shadow: none;
}

.has-hero .site-header .logo,
.has-hero .site-header .logo-icon,
.has-hero .site-header .main-nav a {
    color: var(--color-white);
}

.has-hero .site-header .main-nav a::after {
    background: var(--color-white);
}

.has-hero .site-header .header-cta .btn {
    border-color: var(--color-white);
    color: var(--color-white);
    background: transparent;
}

.has-hero .site-header .header-cta .btn:hover {
    background: var(--color-white);
    color: var(--color-dark-navy);
}

.has-hero .site-header .mobile-menu-toggle span {
    background: var(--color-white);
}

.has-hero .site-header.scrolled {
    background: var(--color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.has-hero .site-header.scrolled .logo {
    color: var(--color-dark-navy);
}

.has-hero .site-header.scrolled .logo-icon {
    color: var(--color-deep-blue);
}

.has-hero .site-header.scrolled .main-nav a {
    color: var(--color-text);
}

.has-hero .site-header.scrolled .main-nav a::after {
    background: var(--color-deep-blue);
}

.has-hero .site-header.scrolled .header-cta .btn {
    background: var(--color-deep-blue);
    border-color: var(--color-deep-blue);
    color: var(--color-white);
}

.has-hero .site-header.scrolled .mobile-menu-toggle span {
    background: var(--color-dark-navy);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    color: var(--color-white);
    padding: 10rem 0 6rem;
    text-align: center;
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-slides {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.5s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(22, 66, 91, 0.8) 0%, rgba(22, 66, 91, 0.65) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    color: var(--color-white);
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero .subheadline {
    font-size: 1.25rem;
    color: var(--color-sky-blue);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   PAGE HEADER (inner pages)
   ============================================ */
.page-header {
    background: linear-gradient(135deg, var(--color-dark-navy) 0%, var(--color-deep-blue) 100%);
    color: var(--color-white);
    padding: 8rem 0 4rem;
    text-align: center;
}

.page-header h1 {
    color: var(--color-white);
    font-size: 2.75rem;
    margin-bottom: 1rem;
}

.page-header p {
    color: var(--color-sky-blue);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   PROBLEM / TEXT SECTIONS
   ============================================ */
.section-light {
    background: var(--color-white);
}

.section-gray {
    background: var(--color-light-gray);
}

.section-dark {
    background: var(--color-dark-navy);
    color: var(--color-white);
}

.section-dark h2,
.section-dark h3 {
    color: var(--color-white);
}

.section-dark p {
    color: var(--color-sky-blue);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    margin-bottom: 0.75rem;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   CARDS GRID
   ============================================ */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.cards-grid.two-col {
    grid-template-columns: repeat(2, 1fr);
}

.cards-grid.four-col {
    grid-template-columns: repeat(4, 1fr);
}

.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card .card-icon {
    margin-bottom: 1.25rem;
    display: block;
    color: var(--color-medium-blue);
}

.card .card-icon svg {
    display: block;
}

.card h3 {
    color: var(--color-dark-navy);
}

.card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
}

.card ul {
    margin-bottom: 1.5rem;
}

.card ul li {
    padding: 0.35rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text);
    font-size: 0.95rem;
}

.card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-medium-blue);
    font-weight: 700;
}

/* ============================================
   PAIN POINTS
   ============================================ */
.pain-points {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.pain-point {
    text-align: center;
    padding: 2rem;
}

.pain-point .icon {
    margin-bottom: 1rem;
    color: var(--color-medium-blue);
}

.pain-point .icon svg {
    display: block;
    margin: 0 auto;
}

.pain-point h3 {
    color: var(--color-dark-navy);
    margin-bottom: 0.5rem;
}

.pain-point p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ============================================
   STEPS / HOW IT WORKS
   ============================================ */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    counter-reset: step;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-deep-blue);
    color: var(--color-white);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.step h3 {
    color: var(--color-dark-navy);
    margin-bottom: 0.5rem;
}

.step p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ============================================
   OUTCOMES
   ============================================ */
.outcomes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.outcome {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--radius);
}

.outcome .outcome-icon {
    flex-shrink: 0;
    color: var(--color-sky-blue);
}

.outcome .outcome-icon svg {
    display: block;
}

.outcome h4 {
    color: var(--color-white);
    margin-bottom: 0.25rem;
}

.outcome p {
    color: var(--color-sky-blue);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--color-deep-blue) 0%, var(--color-medium-blue) 100%);
    color: var(--color-white);
    text-align: center;
    padding: 5rem 0;
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   CONTACT FORM
   ============================================ */
.contact-section {
    max-width: 680px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.contact-section .intro {
    text-align: center;
    margin-bottom: 2.5rem;
}

.contact-section .intro p {
    color: var(--color-text-light);
    font-size: 1.05rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-dark-navy);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 2px solid var(--color-light-gray);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: var(--transition);
    background: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-medium-blue);
    box-shadow: 0 0 0 3px rgba(58, 124, 165, 0.15);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

.form-submit {
    text-align: center;
    margin-top: 2rem;
}

.form-submit .btn {
    min-width: 280px;
}

.form-message {
    text-align: center;
    padding: 1rem;
    border-radius: var(--radius);
    margin-top: 1rem;
    display: none;
}

.form-message.success {
    background: #ecfdf5;
    color: #065f46;
    display: block;
}

.form-message.error {
    background: #fef2f2;
    color: #991b1b;
    display: block;
}

/* ============================================
   CASE STUDY
   ============================================ */
.case-study-content {
    padding: 4rem 0;
}

.before-after {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.before, .after {
    padding: 2.5rem;
    border-radius: var(--radius-lg);
}

.before {
    background: var(--color-light-gray);
}

.after {
    background: var(--color-dark-navy);
    color: var(--color-white);
}

.after h3 {
    color: var(--color-white);
}

.after ul li {
    color: var(--color-sky-blue);
}

.before h3, .after h3 {
    margin-bottom: 1.5rem;
    font-size: 1.35rem;
}

.before ul li, .after ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.before ul li::before {
    content: '✗';
    position: absolute;
    left: 0;
    color: #dc2626;
    font-weight: 700;
}

.after ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-sky-blue);
    font-weight: 700;
}

.results-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.metric {
    padding: 2rem;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.metric .number {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--color-deep-blue);
    display: block;
    margin-bottom: 0.25rem;
}

.metric .label {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-content {
    max-width: 780px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.about-content h2 {
    margin-top: 2.5rem;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--color-dark-navy);
    color: var(--color-white);
    padding: 3rem 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-nav {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9rem;
}

.footer-nav a:hover {
    color: var(--color-white);
}

.footer-tagline {
    font-size: 0.95rem;
    color: var(--color-white);
    font-weight: 600;
}

.footer-copy {
    width: 100%;
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE — Tablet (1024px)
   ============================================ */
@media (max-width: 1024px) {
    h1 { font-size: 2.75rem; }
    h2 { font-size: 2rem; }

    .hero h1 { font-size: 2.75rem; }

    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cards-grid.four-col {
        grid-template-columns: repeat(2, 1fr);
    }

    .results-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   RESPONSIVE — Mobile (768px)
   ============================================ */
@media (max-width: 768px) {
    html { font-size: 15px; }

    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }

    section { padding: 3.5rem 0; }

    .hero {
        padding: 8rem 0 4rem;
        min-height: auto;
    }

    .hero h1 { font-size: 2.25rem; }

    .hero .subheadline { font-size: 1.05rem; }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .page-header {
        padding: 7rem 0 3rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    /* Mobile nav */
    .main-nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 1.5rem 2rem;
        gap: 1rem;
        box-shadow: var(--shadow);
    }

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

    .has-hero .main-nav {
        background: var(--color-dark-navy);
    }

    .has-hero .site-header.scrolled .main-nav {
        background: var(--color-white);
    }

    .has-hero .site-header.scrolled .main-nav a {
        color: var(--color-text);
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .header-cta {
        display: none;
    }

    /* Grids go single column */
    .cards-grid,
    .cards-grid.two-col,
    .cards-grid.four-col {
        grid-template-columns: 1fr;
    }

    .pain-points,
    .steps {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .outcomes-grid {
        grid-template-columns: 1fr;
    }

    .before-after {
        grid-template-columns: 1fr;
    }

    .results-metrics {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-nav {
        justify-content: center;
    }
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-deep-blue);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--color-medium-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* Padding for non-hero pages to account for fixed header */
body:not(.has-hero) main {
    padding-top: var(--header-height);
}