/* ===================================
   CSS Variables & Reset
   =================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --text: #1A1A1A;
    --text-secondary: #4a4a4a;
    --text-muted: #777;
    --bg: #FFFFFF;
    --bg-alt: #F4F4F4;
    --accent: #001F54;
    --accent-mid: #003580;
    --accent-light: #E6EBF5;
    --accent-orange: #FF6F00;
    --border: #e2e2e0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.65;
    font-size: 16px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
}

/* ===================================
   Navigation
   =================================== */

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--accent);
    border-bottom: 1px solid var(--accent-mid);
    z-index: 100;
    padding: 24px 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-name {
    display: flex;
    align-items: center;
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    color: white;
    text-decoration: none;
    font-size: 56px;
    line-height: 1;
    letter-spacing: -0.01em;
}

/* Hamburger Menu */
.nav-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    z-index: 101;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: white;
    transition: all 0.3s;
}

.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--bg);
    border-left: 1px solid var(--border);
    padding: 100px 32px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    transition: right 0.3s;
}

.nav-open .nav-menu {
    right: 0;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    transition: color 0.2s;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.nav-menu a:hover {
    color: var(--accent);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    padding: 140px 48px 100px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    max-width: 480px;
}

.hero-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding: 8px 14px;
    background: var(--accent-light);
    margin-bottom: 28px;
}

h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.12;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    color: var(--accent);
}

.hero-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.hero-credentials {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Impact Box */
.impact-box {
    background: var(--accent);
    color: white;
    padding: 56px 48px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.impact-box::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 1px solid var(--border);
    z-index: -1;
}

.impact-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    opacity: 0.8;
    margin-bottom: 16px;
}

.impact-ratio {
    margin-bottom: 12px;
}

.impact-number {
    font-family: 'Montserrat', sans-serif;
    font-size: 7rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
}

.impact-explain {
    font-size: 1.05rem;
    opacity: 0.9;
}

/* ===================================
   Section Layout
   =================================== */

section {
    padding: 120px 48px;
    max-width: 1000px;
    margin: 0 auto;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 60px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.section-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 8px;
}

h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--accent);
}

h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin: 48px 0 16px;
    color: var(--accent);
}

.section-count {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.section-stats {
    text-align: right;
}

.section-stat {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.section-stat strong {
    color: var(--accent-mid);
    font-weight: 600;
}

.section-stats .section-count {
    margin-top: 8px;
}

/* ===================================
   Projects
   =================================== */

/* Project Tabs */
.project-tabs {
    margin: 0 0 48px 0;
}

.project-tabs input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.tab-labels {
    display: flex;
    gap: 16px;
    border-bottom: 2px solid var(--border);
    margin-bottom: 48px;
}

.tab-labels label {
    padding: 16px 24px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.2s, border-color 0.2s;
}

.tab-labels label:hover {
    color: var(--text-secondary);
}

#tab-completed:checked ~ .tab-labels label[for="tab-completed"],
#tab-current:checked ~ .tab-labels label[for="tab-current"] {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-content {
    display: none;
}

#tab-completed:checked ~ #content-completed,
#tab-current:checked ~ #content-current {
    display: block;
}

/* Project Cards */
.project {
    padding: 0 0 48px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}

.project:last-of-type {
    border-bottom: none;
}

.project-summary {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 24px;
    border: 1px solid var(--border);
    background: var(--bg);
    position: relative;
}

.project-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.project-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.project-category {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    white-space: nowrap;
    margin: 0;
}

.project-separator {
    color: var(--text-muted);
}

.project-client {
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.project-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.project-stats {
    display: flex;
    gap: 24px;
    flex: 0 0 auto;
}

.project-stat {
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.stat-label {
    color: var(--text-muted);
}

.stat-value {
    font-weight: 600;
    color: var(--accent-mid);
}

.project-title {
    flex: 1;
    min-width: 0;
}

.project-title h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--accent);
}

.project-detail {
    display: block;
}

.project-content {
    padding: 24px 24px 0 24px;
}

.project-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.project-content strong {
    color: var(--text);
    font-weight: 500;
}

.project.current {
    background: var(--bg-alt);
    border: none;
}

.project.current .project-summary {
    background: var(--bg-alt);
    border: 1px solid var(--border);
}

.current-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: white;
    background: var(--accent);
    padding: 5px 10px;
    margin-bottom: 12px;
}

/* ===================================
   Content Pages
   =================================== */

.content-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    max-width: 700px;
}

.content-text p {
    margin-bottom: 16px;
}

.content-text strong {
    color: var(--text);
    font-weight: 600;
}

.content-text a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-light);
    transition: border-color 0.2s;
}

.content-text a:hover {
    border-bottom-color: var(--accent);
}

/* About Section */
.about-text p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    max-width: 640px;
    margin-bottom: 16px;
}

.about-text a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-light);
    transition: border-color 0.2s;
}

.about-text a:hover {
    border-bottom-color: var(--accent);
}

/* ===================================
   Services & Pricing
   =================================== */

.service-item {
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.service-item:last-of-type {
    border-bottom: none;
}

.service-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 12px;
}

.service-description {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin: 32px 0;
}

.pricing-box {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    padding: 28px;
}

.pricing-box h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 8px;
}

.pricing-amount {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-mid);
    margin-bottom: 12px;
}

.pricing-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.pricing-note strong {
    color: var(--text-secondary);
}

/* ===================================
   FAQ
   =================================== */

.faq-item {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
}

.faq-item:last-of-type {
    border-bottom: none;
}

.faq-question {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.faq-answer {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

.faq-answer a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-light);
    transition: border-color 0.2s;
}

.faq-answer a:hover {
    border-bottom-color: var(--accent);
}

/* ===================================
   Contact Form
   =================================== */

.contact-options {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 28px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent-orange);
    color: white;
}

.btn-primary:hover {
    background: #E66300;
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--text-muted);
}

.btn svg {
    width: 18px;
    height: 18px;
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-submit {
    text-align: center;
}

/* ===================================
   CTA Section
   =================================== */

.cta-section {
    background: var(--bg-alt);
    padding: 80px 48px;
    max-width: none;
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    margin-bottom: 16px;
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 32px;
}

/* ===================================
   Footer
   =================================== */

footer {
    padding: 48px;
    color: white;
    font-size: 0.8rem;
    background: var(--accent);
    border-top: 1px solid var(--accent-mid);
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 80px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column h4 {
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.footer-column a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}

.footer-column a:hover {
    color: var(--accent-orange);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    margin: 4px 0;
}

footer .footer-note {
    margin-top: 8px;
    opacity: 0.7;
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 900px) {
    /* Hero */
    .hero {
        grid-template-columns: 1fr;
        gap: 60px;
        padding: 120px 32px 80px;
        min-height: auto;
    }

    .hero-content {
        max-width: none;
    }

    h1 {
        font-size: 2.6rem;
    }

    /* Impact Box */
    .impact-box {
        padding: 40px 36px;
    }

    .impact-box::before {
        display: none;
    }

    .impact-number {
        font-size: 5rem;
    }

    /* Sections */
    section {
        padding: 80px 32px;
    }

    h2 {
        font-size: 1.8rem;
    }

    h3 {
        font-size: 1.3rem;
    }

    /* Navigation */
    nav {
        padding: 20px 24px;
        flex-direction: row;
        gap: 16px;
        align-items: center;
        justify-content: space-between;
    }

    .nav-name {
        font-size: 44px;
    }

    .nav-desktop {
        display: none;
    }

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

    /* Projects */
    .project-summary {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 16px;
    }

    .project-meta {
        flex-wrap: wrap;
        gap: 8px;
    }

    .project-stats {
        gap: 16px;
    }

    .project-title h3 {
        white-space: normal;
        font-size: 1.2rem;
    }

    .project-content {
        padding: 16px;
    }

    .tab-labels {
        flex-direction: column;
        gap: 0;
        border-bottom: none;
    }

    .tab-labels label {
        border-bottom: 1px solid var(--border);
        border-left: 3px solid transparent;
        margin-bottom: 0;
        padding: 12px 16px;
    }

    #tab-completed:checked ~ .tab-labels label[for="tab-completed"],
    #tab-current:checked ~ .tab-labels label[for="tab-current"] {
        border-left-color: var(--accent);
        border-bottom-color: var(--border);
    }

    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    /* Section Header */
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .section-stats {
        text-align: left;
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
    }

    .section-stat {
        display: inline;
        margin-bottom: 0;
    }

    /* Buttons */
    .btn {
        justify-content: center;
        width: 100%;
    }

    /* Footer */
    .footer-nav {
        gap: 48px;
    }
}

@media (max-width: 500px) {
    .faq-question {
        font-size: 1.2rem;
    }

    /* Impact Label - Allow wrapping on small screens */
    .impact-label {
        font-size: 0.7rem;
        line-height: 1.4;
    }

    .impact-number {
        font-size: 4rem;
    }

    /* Navigation */
    .nav-name {
        font-size: 32px;
    }

    /* Hero text adjustments */
    h1 {
        font-size: 2rem;
    }

    /* Footer */
    .footer-nav {
        flex-direction: column;
        align-items: center;
        gap: 32px;
        text-align: center;
    }
}