/* A-Z Drone Service - Minimalist Black & Gray Branding */

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

:root {
    --black: #000000;
    --gray: #f1f1f1;
    --white: #ffffff;
    --text: #000000;
    --border: #000000;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: var(--white);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--black);
    color: var(--white);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 2px solid var(--black);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

.nav a:hover {
    opacity: 0.7;
}

.btn-header {
    background: var(--white);
    color: var(--black);
    padding: 10px 24px;
    border-radius: 0;
    font-weight: 700;
}

.btn-header:hover {
    opacity: 1;
    background: var(--gray);
}

.view-roof-link {
    font-weight: 700 !important;
    text-decoration: underline !important;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 16px 40px;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
    border: 2px solid var(--black);
}

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

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

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

.btn-secondary:hover {
    background: var(--black);
    color: var(--white);
}

.btn-large {
    padding: 20px 60px;
    font-size: 1.1rem;
}

/* Hero */
.hero {
    padding: 100px 0;
    border-bottom: 2px solid var(--black);
}

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

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 900;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    line-height: 1.5;
}

.hero-cta {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 60px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    margin-top: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.placeholder-3d {
    background: var(--gray);
    border: 2px solid var(--black);
    padding: 60px 40px;
    text-align: center;
}

.placeholder-icon {
    margin-bottom: 20px;
}

.placeholder-3d p {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

/* Problem/Solution */
.problem-solution {
    padding: 100px 0;
    background: var(--gray);
    border-bottom: 2px solid var(--black);
}

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

.problem h2,
.solution h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    font-weight: 900;
}

.problem-list,
.solution-list {
    list-style: none;
}

.problem-list li,
.solution-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--black);
    font-size: 1.1rem;
}

.problem-list li::before {
    content: '✕ ';
    margin-right: 10px;
    font-weight: 700;
}

.solution-list li::before {
    content: '✓ ';
    margin-right: 10px;
    font-weight: 700;
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
    border-bottom: 2px solid var(--black);
}

.how-it-works h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 80px;
    font-weight: 900;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
}

.step {
    text-align: center;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--black);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 900;
    margin: 0 auto 30px;
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    font-weight: 900;
}

.step p {
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Technology */
.technology {
    padding: 100px 0;
    background: var(--black);
    color: var(--white);
    border-bottom: 2px solid var(--black);
}

.technology h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 80px;
    font-weight: 900;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 80px;
}

.tech-feature {
    text-align: center;
}

.tech-icon {
    width: 60px;
    height: 60px;
    background: var(--white);
    color: var(--black);
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 900;
}

.tech-feature h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    font-weight: 900;
}

.tech-feature p {
    font-size: 1rem;
    line-height: 1.6;
}

.tech-specs {
    background: var(--white);
    color: var(--black);
    padding: 60px;
    border: 2px solid var(--white);
}

.tech-specs h3 {
    font-size: 2rem;
    margin-bottom: 40px;
    font-weight: 900;
    text-align: center;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.spec {
    padding: 20px;
    border: 2px solid var(--black);
    font-size: 1rem;
}

.spec strong {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Deliverables */
.deliverables {
    padding: 100px 0;
    border-bottom: 2px solid var(--black);
}

.deliverables h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 80px;
    font-weight: 900;
}

.deliverables-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.deliverable {
    background: var(--gray);
    padding: 40px;
    border: 2px solid var(--black);
}

.deliverable h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    font-weight: 900;
}

.deliverable ul {
    list-style: none;
}

.deliverable li {
    padding: 10px 0;
    border-bottom: 1px solid var(--black);
}

.deliverable li::before {
    content: '■ ';
    margin-right: 10px;
}

/* Use Cases */
.use-cases {
    padding: 100px 0;
    background: var(--gray);
    border-bottom: 2px solid var(--black);
}

.use-cases h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 80px;
    font-weight: 900;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.case {
    background: var(--white);
    padding: 40px;
    border: 2px solid var(--black);
}

.case h3 {
    font-size: 1.3rem;
    margin-bottom: 16px;
    font-weight: 900;
}

.case p {
    line-height: 1.6;
}

/* Pricing */
.pricing {
    padding: 100px 0;
    border-bottom: 2px solid var(--black);
}

.pricing h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 80px;
    font-weight: 900;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.price-card {
    background: var(--gray);
    padding: 60px 40px;
    border: 2px solid var(--black);
    text-align: center;
    position: relative;
}

.price-card.featured {
    background: var(--black);
    color: var(--white);
}

.popular {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--white);
    color: var(--black);
    padding: 8px 24px;
    font-size: 0.8rem;
    font-weight: 900;
    letter-spacing: 1px;
    border: 2px solid var(--black);
}

.price-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    font-weight: 900;
}

.price {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 16px;
}

.price-description {
    font-size: 0.9rem;
    margin-bottom: 40px;
}

.price-card ul {
    list-style: none;
    text-align: left;
    margin-bottom: 40px;
}

.price-card ul li {
    padding: 12px 0;
    border-bottom: 1px solid var(--black);
}

.price-card.featured ul li {
    border-bottom: 1px solid var(--white);
}

.price-card ul li::before {
    content: '■ ';
    margin-right: 10px;
}

.price-card .btn-primary {
    width: 100%;
}

.price-card.featured .btn-primary {
    background: var(--white);
    color: var(--black);
}

.price-card.featured .btn-primary:hover {
    background: var(--gray);
}

.price-card .btn-secondary {
    width: 100%;
}

.pricing-note {
    text-align: center;
    font-size: 1rem;
    padding: 30px;
    background: var(--gray);
    border: 2px solid var(--black);
}

/* Service Area */
.service-area {
    padding: 100px 0;
    background: var(--gray);
    text-align: center;
    border-bottom: 2px solid var(--black);
}

.service-area h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 900;
}

.service-area > p {
    font-size: 1.2rem;
    margin-bottom: 60px;
}

.areas {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.area {
    background: var(--white);
    padding: 40px;
    border: 2px solid var(--black);
}

.area h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    font-weight: 900;
}

.area p {
    line-height: 1.6;
}

.area-note {
    font-size: 1.1rem;
}

.area-note a {
    color: var(--black);
    text-decoration: underline;
    font-weight: 700;
}

/* Contact */
.contact {
    padding: 100px 0;
    border-bottom: 2px solid var(--black);
}

.contact h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 20px;
    font-weight: 900;
}

.contact-subtitle {
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 60px;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background: var(--gray);
    padding: 60px;
    border: 2px solid var(--black);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px;
    border: 2px solid var(--black);
    background: var(--white);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    background: var(--white);
}

button[type="submit"] {
    width: 100%;
    border: none;
}

.form-note {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background: var(--black);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 900;
    letter-spacing: 2px;
}

.footer-col p,
.footer-col li {
    margin-bottom: 10px;
    line-height: 1.6;
}

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

.footer-col a {
    color: var(--white);
    text-decoration: none;
}

.footer-col a:hover {
    text-decoration: underline;
}

.footer-brand {
    margin-top: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--white);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
    }

    .split-section,
    .steps,
    .tech-grid,
    .specs-grid,
    .deliverables-grid,
    .cases-grid,
    .pricing-grid,
    .areas,
    .footer-content {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .nav {
        flex-direction: column;
        gap: 15px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 40px 30px;
    }
}

@media (max-width: 640px) {
    .hero h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 2rem !important;
    }

    .stat-number {
        font-size: 2rem;
    }

    .hero-stats {
        gap: 30px;
    }
}

/* Access Project Section */
.access-project {
    background: var(--black);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.access-content {
    max-width: 700px;
    margin: 0 auto;
}

.access-project h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 15px;
}

.access-project p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    font-weight: 600;
}

.btn-access {
    display: inline-block;
    background: var(--white);
    color: var(--black);
    padding: 20px 50px;
    font-size: 1.2rem;
    font-weight: 900;
    letter-spacing: 1px;
    text-decoration: none;
    border: 3px solid var(--white);
    transition: all 0.3s;
}

.btn-access:hover {
    background: var(--gray);
    border-color: var(--gray);
}

.access-note {
    margin-top: 20px;
    font-size: 0.9rem;
    opacity: 0.8;
    font-weight: 400 !important;
}

@media (max-width: 768px) {
    .access-project h2 {
        font-size: 2rem;
    }

    .btn-access {
        padding: 16px 30px;
        font-size: 1rem;
    }
}