/* Base Styles & Design System */
:root {
    /* Primary Colors */
    --color-hero-bg-start: #3D2E6E;
    --color-hero-bg-end: #4A3B8A;
    --color-primary-accent: #3B5DFF;
    --color-primary-hover: #2F45CC;
    --color-secondary-accent: #1E90FF;
    --color-bg-light: #F5F5F7;
    --color-bg-white: #FFFFFF;

    /* Text Colors */
    --text-white: #FFFFFF;
    --text-light-gray: #E8E8E8;
    --text-dark-navy: #1A1A4D;
    --text-medium-gray: #666666;
    --text-accent: #3B5DFF;

    /* Fonts */
    --font-main: 'Outfit', sans-serif;

    /* Layout */
    --container-max-width: 1200px;
    --header-height: 80px;
    --transition-smooth: 0.3s ease;
    --shadow-subtle: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 10px 20px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-medium-gray);
    background-color: var(--color-bg-white);
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-dark-navy);
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

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

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

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

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

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

.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-smooth);
    border: none;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 0 15px rgba(59, 93, 255, 0.4);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-white);
    border: 2px solid var(--text-white);
}

.btn-secondary:hover {
    background-color: var(--text-white);
    color: var(--color-hero-bg-start);
}

.label {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 1rem;
    display: block;
}

.label-accent {
    color: var(--color-primary-accent);
}

.label-gray {
    color: var(--text-light-gray);
}

/* Header & Navigation */
header {
    height: var(--header-height);
    background: transparent;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: all var(--transition-smooth);
}

header.scrolled {
    height: 70px;
    background: rgba(26, 26, 77, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

/* Robust Logo Module */
.logo-container {
    display: flex;
    align-items: center;
    height: 100%;
    position: relative;
    text-decoration: none;
}

.logo-img {
    height: 80px;
    width: auto;
    display: block;
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

/* Base states: Show white on dark hero, hide color */
.logo-white {
    opacity: 1;
    position: relative;
}

.logo-color {
    opacity: 0;
    position: absolute;
    left: 0;
}

.logo-text-fallback {
    display: none;
    /* Hide unless both images fail, or use as accessibility */
    font-size: 24px;
    font-weight: 800;
    color: var(--text-white);
    letter-spacing: 1px;
}

/* Scrolled states: Show color on light header, hide white */
header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
}

header.scrolled .logo-white {
    opacity: 0;
}

header.scrolled .logo-color {
    opacity: 1;
}

header.scrolled .logo-img {
    height: 70px;
}

header.scrolled .nav-links a {
    color: var(--text-dark-navy);
}

header.scrolled .nav-links a:hover {
    color: var(--color-primary-accent);
}

header.scrolled .logo-text-fallback {
    color: var(--text-dark-navy);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-white);
    font-weight: 500;
    font-size: 16px;
}

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

.nav-cta .btn {
    padding: 10px 24px;
}

/* Mobile Hamburger Redesign */
.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 1001;
    padding: 10px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-white);
    border-radius: 2px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

header.scrolled .hamburger span {
    background-color: var(--text-dark-navy);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 700px;
    position: relative;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-hero-bg-start), var(--color-hero-bg-end));
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero-bg-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -150px;
    right: -150px;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--color-primary-accent), var(--color-secondary-accent));
    clip-path: polygon(100% 0, 0% 100%, 100% 100%);
    opacity: 0.6;
    z-index: 2;
    filter: blur(2px);
}

.hero .container {
    position: relative;
    z-index: 3;
    width: 100%;
}

.hero-content {
    max-width: 700px;
}

.hero-content h1 {
    color: var(--text-white);
    font-size: clamp(40px, 6vw, 64px);
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.hero-content p {
    color: var(--text-light-gray);
    font-size: clamp(16px, 2vw, 20px);
    margin-bottom: 2.5rem;
}

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

/* What We Do */
.what-we-do {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
}

.what-we-do-content h2 {
    font-size: clamp(28px, 4vw, 40px);
    margin-bottom: 1.5rem;
}

.what-we-do-content p {
    font-size: 16px;
    color: var(--text-medium-gray);
    margin-bottom: 2rem;
}

.what-we-do-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
}

/* Our Services */
.services-header {
    max-width: 700px;
    margin: 0 auto 4rem;
}

.services-header h2 {
    font-size: clamp(28px, 4vw, 40px);
    margin-bottom: 1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.service-card {
    background: var(--color-bg-white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(0, 0, 0, 0.03);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 20px 40px rgba(59, 93, 255, 0.15);
    border-color: rgba(59, 93, 255, 0.3);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-primary-accent);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.service-card:hover::before {
    transform: scaleY(1);
}

.service-icon {
    font-size: 40px;
    color: var(--color-primary-accent);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 20px;
    margin-bottom: 1rem;
}

.service-card p {
    font-size: 14px;
    line-height: 1.6;
}

/* Why Choose Us */
.why-us {
    background: linear-gradient(135deg, #1A1A4D, #2D2D5F);
    color: var(--text-white);
}

.why-us h2 {
    color: var(--text-white);
    font-size: clamp(28px, 4vw, 40px);
    margin-bottom: 1rem;
}

.why-us-header {
    margin-bottom: 4rem;
}

.why-us-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.why-us-item {
    text-align: center;
}

.why-icon {
    font-size: 48px;
    color: var(--color-secondary-accent);
    margin-bottom: 1.5rem;
}

.why-us-item h3 {
    color: var(--text-white);
    font-size: 20px;
    margin-bottom: 1rem;
}

.why-us-item p {
    color: var(--text-light-gray);
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--color-bg-white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-subtle);
}

.stars {
    color: #FFD700;
    margin-bottom: 1rem;
}

.testimonial-quote {
    font-style: italic;
    margin-bottom: 1.5rem;
    font-size: 16px;
}

.testimonial-author {
    font-weight: 800;
    font-size: 14px;
    color: var(--text-dark-navy);
    text-transform: uppercase;
}

/* Our Process */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

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

.process-icon {
    width: 80px;
    height: 80px;
    background: var(--color-bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-subtle);
    color: var(--color-primary-accent);
    font-size: 32px;
    border: 2px solid var(--color-bg-light);
}

.process-step h3 {
    font-size: 18px;
    margin-bottom: 1rem;
}

.process-step p {
    font-size: 14px;
}

/* Contact Form Styling */
.contact-form-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-bg-white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark-navy);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #E0E0E0;
    border-radius: 8px;
    font-family: var(--font-main);
    font-size: 15px;
    transition: var(--transition-smooth);
    background-color: #F9F9FB;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary-accent);
    background-color: #FFFFFF;
    box-shadow: 0 0 0 3px rgba(59, 93, 255, 0.1);
}

.form-status {
    margin-top: 1.5rem;
    font-size: 14px;
    font-weight: 500;
}

.form-status.success {
    color: #2ECC71;
}

.form-status.error {
    color: #E74C3C;
}

@media (max-width: 600px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

    .contact-form-container {
        padding: 2rem 1.5rem;
    }
}

/* Footer */
footer {
    background: #1A1A4D;
    color: var(--text-light-gray);
    padding-top: 80px;
    padding-bottom: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 60px;
}

.footer-col h4 {
    color: var(--text-white);
    margin-bottom: 1.5rem;
    font-size: 18px;
}

.footer-col p {
    font-size: 14px;
    line-height: 1.8;
}

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

.footer-links a:hover {
    color: var(--color-secondary-accent);
    padding-left: 5px;
}

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

.social-links a {
    font-size: 24px;
    color: var(--color-primary-accent);
}

.social-links a:hover {
    color: var(--color-secondary-accent);
    filter: drop-shadow(0 0 5px var(--color-secondary-accent));
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .what-we-do {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

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

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

@media (max-width: 768px) {
    header {
        padding: 0;
    }

    .nav-container {
        padding: 0 1.5rem;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(26, 26, 77, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2.5rem;
        transition: all 0.5s cubic-bezier(0.77, 0, 0.175, 1);
        z-index: 1000;
        visibility: hidden;
    }

    .nav-links.active {
        right: 0;
        visibility: visible;
    }

    .nav-links a {
        font-size: 24px;
        font-weight: 700;
        letter-spacing: 2px;
        text-transform: uppercase;
        color: var(--text-white) !important;
    }

    .nav-links a:hover {
        color: var(--color-secondary-accent) !important;
        transform: scale(1.1);
    }

    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

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

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

    .why-us-grid {
        grid-template-columns: 1fr;
    }

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

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

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}