/* ==============================
   Variables & Theme Base
   ============================== */
:root {
    /* Color Palette - Light Blue Zen Theme */
    --color-primary: #3A86FF;
    --color-primary-light: #E0EFFF;
    --color-secondary: #00B4D8;
    --color-accent: #8ECAE6;
    
    --color-bg-light: #F8FBFE;
    --color-bg-darker: #EDF4F9;
    
    --color-text-main: #2B3A4A;
    --color-text-muted: #6B7C8C;
    --color-white: #FFFFFF;

    /* Shadows & Glassmorphism */
    --shadow-soft: 0 10px 30px rgba(58, 134, 255, 0.08);
    --shadow-hover: 0 15px 40px rgba(58, 134, 255, 0.15);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.4);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Layout */
    --container-width: 1100px;
}

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

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    background-color: var(--color-bg-light);
    color: var(--color-text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--color-text-main);
    margin-top: 0;
}

a {
    text-decoration: none;
    color: inherit;
}

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

.section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-text-main);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

/* ==============================
   Glassmorphism Styles
   ============================== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    padding: 2.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

/* ==============================
   Buttons & Links
   ============================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    font-family: var(--font-body);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: 2px solid var(--color-primary);
    box-shadow: 0 4px 15px rgba(58, 134, 255, 0.3);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-white);
    border: 2px solid var(--color-secondary);
    box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
}

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

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

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

.full-width {
    width: 100%;
    box-sizing: border-box;
}

/* ==============================
   Navbar
   ============================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all 0.4s ease;
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-text-main);
    letter-spacing: -0.5px;
}

.logo-text .dot {
    color: var(--color-primary);
}

.brand-container {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.brand-logo {
    height: 48px;
    width: auto;
}

.footer-brand {
    height: 55px;
}

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

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    color: var(--color-text-main);
    transition: color 0.3s;
}

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

.nav-links a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    bottom: -5px;
    left: 0;
    transition: width 0.3s ease;
}

.nav-links a:not(.btn-nav):hover::after {
    width: 100%;
}

.btn-nav {
    background-color: var(--color-primary-light);
    color: var(--color-primary) !important;
    padding: 0.6rem 1.5rem;
    border-radius: 30px;
    font-weight: 600;
}

.btn-nav:hover {
    background-color: var(--color-primary);
    color: var(--color-white) !important;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--color-text-main);
    cursor: pointer;
}

/* ==============================
   Hero Section
   ============================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/hero_bg.png');
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(248, 251, 254, 0.4) 0%, rgba(248, 251, 254, 1) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    padding: 0 2rem;
    z-index: 1;
}

.hero-content h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
}

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

/* ==============================
   Concept Section
   ============================== */
.concept-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.image-wrapper {
    padding: 1rem;
    background: rgba(255,255,255,0.4);
}

.image-wrapper img {
    width: 100%;
    border-radius: 12px;
    display: block;
}

.concept-text .feature {
    margin-bottom: 2.5rem;
}

.concept-text .feature h3 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.concept-text .feature p {
    color: var(--color-text-muted);
}

/* ==============================
   Portfolio Section (Page format)
   ============================== */
.page-header {
    margin-bottom: 2rem;
}

.portfolio-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.portfolio-card {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    height: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.portfolio-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.portfolio-scroller {
    width: 100%;
    height: 350px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    background: #fff;
    cursor: ns-resize;
}

.portfolio-scroller img {
    width: 100%;
    height: auto;
    object-position: top;
    transition: transform 3.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: block;
}

.portfolio-card:hover .portfolio-scroller img {
    transform: translateY(calc(-100% + 350px));
}

.portfolio-info {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.portfolio-info h3 {
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    flex-shrink: 0;
}

.project-desc {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.mt-3 {
    margin-top: auto;
}

@media (max-width: 992px) {
    .portfolio-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .portfolio-grid-3 {
        grid-template-columns: 1fr;
    }
}

/* ==============================
   Offers Section
   ============================== */
.offers {
    background-color: var(--color-bg-darker);
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    display: flex;
    flex-direction: column;
    padding: 3rem 2rem;
}

.pricing-card.premium {
    background: linear-gradient(145deg, #ffffff, var(--color-primary-light));
    border: 1px solid var(--color-accent);
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.card-header h3 {
    font-size: 1.5rem;
    color: var(--color-text-main);
    margin-bottom: 1rem;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-primary);
    font-family: var(--font-heading);
}

.premium .price {
    color: var(--color-secondary);
}

.price span {
    font-size: 1rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
}

.features {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem 0;
    flex-grow: 1;
}

.features li {
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.features li::before {
    content: '✓';
    color: var(--color-primary);
    font-weight: bold;
    margin-right: 10px;
}

.premium .features li::before {
    color: var(--color-secondary);
}

/* ==============================
   Contact Section
   ============================== */
.contact-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text-main);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    padding: 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.8);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text-main);
    transition: all 0.3s;
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 0 0 4px var(--color-primary-light);
}

.form-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 1rem;
}

/* ==============================
   Footer
   ============================== */
.footer {
    background-color: white;
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.footer-logo p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

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

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* ==============================
   Animations & Keyframes
   ============================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* ==============================
   Responsive Queries
   ============================== */
@media (max-width: 992px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* simple mobile menu hiding for now */
    }
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .concept-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}