/* 
   RANK LIFT DIGITAL - CSS DESIGN SYSTEM
   Modern, Professional, High-Converting Agency Style
*/

:root {
    --primary: #004aad;
    --primary-dark: #003a8c;
    --secondary: #00d2ff;
    --accent: #3aedff;
    --text-main: #2d3436;
    --text-muted: #636e72;
    --bg-light: #f9f9f9;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow: 0 10px 30px rgba(0, 74, 173, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-weight: 800;
    line-height: 1.2;
    color: var(--primary-dark);
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 100px 0;
}

/* NAVBAR */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
    background: transparent;
}

nav.sticky {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 0.8rem 0;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.logo span {
    color: var(--secondary);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
}

nav.sticky .nav-links a {
    color: var(--text-main);
}

.nav-links a:hover {
    color: var(--secondary);
}

.btn-nav {
    background: var(--gradient);
    color: var(--white) !important;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
}

/* HERO SECTION */
.hero {
    height: 100vh;
    background: url('https://images.unsplash.com/photo-1551434678-e076c223a692?auto=format&fit=crop&q=80&w=2070') no-repeat center center/cover;
    position: relative;
    display: flex;
    align-items: center;
    color: var(--white);
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 74, 173, 0.3));
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    animation: slideUp 1s ease;
}

.hero h1 {
    font-size: 4rem;
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
}

/* BUTTONS */
.btn {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 10px 20px rgba(0, 198, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 198, 255, 0.4);
}

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

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

/* SERVICE CARDS */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.service-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--secondary);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: rgba(0, 198, 255, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: var(--primary);
    font-size: 2rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* WHY CHOOSE US / STATS */
.stats-section {
    background: var(--primary-dark);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    text-align: center;
}

.stat-item h2 {
    font-size: 3.5rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.8;
}

/* FORM STYLES */
.form-container {
    background: var(--white);
    padding: 4rem;
    border-radius: 30px;
    box-shadow: var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-family: inherit;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 74, 173, 0.1);
}

.checkbox-group {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin: 2rem 0;
}

.checkbox-group input {
    margin-top: 5px;
    width: 20px;
    height: 20px;
}

.checkbox-group label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* TESTIMONIALS */
.testimonial-card {
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 20px;
    font-style: italic;
    position: relative;
    margin: 1rem;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 5rem;
    color: rgba(0, 74, 173, 0.05);
}

.testimonial-author {
    margin-top: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-style: normal;
}

.author-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
}

/* FOOTER */
footer {
    background: #0a0a0a;
    color: var(--white);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 4rem;
    margin-bottom: 50px;
}

.footer-logo {
    margin-bottom: 1.5rem;
}

.footer-logo img {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.footer-links h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
}

.footer-links a:hover {
    color: var(--secondary);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
}

/* ANIMATIONS */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* RESPONSIVE */
@media (max-width: 992px) {
    .hero h1 { font-size: 3rem; }
    .nav-links { display: none; }
}

@media (max-width: 768px) {
    .container { padding: 0 1.5rem; }
    .hero { text-align: center; justify-content: center; }
    .hero-btns { justify-content: center; flex-direction: column; }
    .section-padding { padding: 60px 0; }
    .form-container { padding: 2rem; }
}