/* =========================================================================
   STYLE.CSS - Nah Digital
   Core Design System based on Swiss Style
   ========================================================================= */

:root {
    /* Color Palette */
    --c-primary: #1A1F36;    /* Deep Navy */
    --c-accent: #E91E63;     /* Elegant Magenta */
    --c-secondary: #D4AF37;  /* Subtle Gold */
    --c-bg-main: #FFFFFF;    /* Pure White */
    --c-bg-offset: #F8F9FA;  /* Very Light Gray for slight contrast */
    --c-text-main: #212121;  /* Dark Text */
    --c-text-light: #5f6368; /* Light Text */

    /* Typography */
    --font-primary: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Borders & Radius */
    --radius-sm: 4px;
    --radius-md: 8px; /* Button rounding as requested */
    --radius-lg: 16px;

    /* Transitions */
    --transition-fast: 0.2s ease-in-out;
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Variables */
.dark-theme {
    --c-bg-main: #0B0F19;    /* Very dark navy/black */
    --c-bg-offset: #131A2A;  /* Slightly lighter dark background */
    --c-text-main: #F8F9FA;  /* Almost white text */
    --c-text-light: #A0AABF; /* Muted text for dark mode */
    --c-primary: #FFFFFF;    /* Navy becomes white for dark mode contrast */
}

/* Dark Theme Overrides */
.dark-theme .header {
    background-color: rgba(11, 15, 25, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.dark-theme .hero {
    background: linear-gradient(135deg, var(--c-bg-offset) 0%, var(--c-bg-main) 100%);
}
.dark-theme .hero-bg-gradient {
    background: radial-gradient(circle, rgba(233,30,99,0.05) 0%, rgba(255,255,255,0) 70%); /* Subtle magenta glow */
}
.dark-theme .footer {
    background-color: #05080f; /* Pitch black */
    border-top: 1px solid rgba(255,255,255,0.05);
}
.dark-theme .btn-secondary { color: var(--c-text-main); border-color: rgba(255,255,255,0.2); }
.dark-theme .btn-secondary:hover { background-color: rgba(255,255,255,0.1); color: #FFF; border-color: transparent;}
.dark-theme .form-group input, 
.dark-theme .form-group textarea {
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--c-text-main);
}
.dark-theme .form-group input:focus, 
.dark-theme .form-group textarea:focus {
    background-color: #1a2235;
}
.dark-theme .approach-card,
.dark-theme .service-card,
.dark-theme .contact-form-wrapper {
    background-color: var(--c-bg-offset);
    border: 1px solid rgba(255,255,255,0.05);
}
.dark-theme .image-placeholder {
    background-color: var(--c-bg-offset);
}

@media (max-width: 900px) {
    .dark-theme .nav {
        background-color: var(--c-bg-main);
        box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    }
    .dark-theme .nav a:not(.btn) {
        border-bottom: 1px solid rgba(255,255,255,0.05);
    }
}

/* =========================================================================
   RESET & BASE
   ========================================================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--c-bg-main);
    color: var(--c-text-main);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 18px; /* Body base 18px */
}

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

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

/* Typography Hierarchy (Swiss Style constraints) */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--c-primary);
    letter-spacing: -0.02em; /* Tighter tracking for bold headings */
}

h1 { font-size: clamp(3rem, 5vw + 1rem, 4.5rem); } /* 48-72px approx */
h2 { font-size: clamp(2rem, 4vw + 1rem, 3.5rem); margin-bottom: var(--spacing-sm); }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--c-text-light);
}

.text-accent { color: var(--c-accent); }
.text-navy { color: var(--c-primary); }
.text-gold { color: var(--c-secondary); }

/* =========================================================================
   LAYOUT & CONTAINERS
   ========================================================================= */

.container {
    width: 100%;
    max-width: 1400px; /* Generous width for grid */
    margin: 0 auto;
    padding: 0 max(2rem, 5vw); /* Responsive padding */
}

section {
    padding: var(--spacing-xl) 0;
}

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

/* =========================================================================
   COMPONENTS - BUTTONS
   ========================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    letter-spacing: 0.01em;
}

.btn-primary {
    background-color: var(--c-accent);
    color: #FFF;
    box-shadow: 0 4px 14px rgba(233, 30, 99, 0.2);
}

.btn-primary:hover {
    background-color: #d81b60;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(233, 30, 99, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--c-primary);
    color: #FFF;
}

.btn-sm {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}

/* =========================================================================
   HEADER
   ========================================================================= */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: padding var(--transition-fast);
    padding: 1rem 0;
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--c-primary);
    letter-spacing: -0.03em;
}

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

.nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav a:not(.btn) {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--c-text-main);
    position: relative;
}

.nav a:not(.btn)::after {
    content: '';
    position: absolute;
    width: 0%;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--c-accent);
    transition: width var(--transition-fast);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--c-primary);
    cursor: pointer;
}

/* Header Controls */
.controls-wrapper {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding-left: 1.5rem;
    border-left: 1px solid rgba(0, 0, 0, 0.1);
}

.dark-theme .controls-wrapper {
    border-left-color: rgba(255, 255, 255, 0.1);
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lang-switch button {
    background: transparent;
    border: none;
    color: var(--c-text-light);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    padding: 0.2rem;
    transition: color var(--transition-fast);
}

.lang-switch button:hover {
    color: var(--c-text-main);
}

.lang-switch button.active {
    color: var(--c-accent);
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--c-text-main);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.2rem;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.icon-btn:hover {
    color: var(--c-accent);
    transform: scale(1.1);
}

/* =========================================================================
   FOOTER
   ========================================================================= */

.footer {
    background-color: var(--c-primary);
    color: #ffffff;
    padding: var(--spacing-lg) 0 2rem;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    align-items: start;
}

.footer .logo-text {
    color: #ffffff;
}

.footer p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 1rem;
    font-size: 0.9rem;
}

.footer-center, .footer-right {
    display: flex;
    flex-direction: column;
}

/* =========================================================================
   CONTROLS (LANG & THEME)
   ========================================================================= */
.controls-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: 1rem;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--c-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background var(--transition-fast);
}

.icon-btn:hover {
    background: rgba(0,0,0,0.05);
}

.dark-theme .icon-btn:hover {
    background: rgba(255,255,255,0.1);
}

.lang-switch {
    display: flex;
    gap: 0.25rem;
    font-size: 0.85rem;
    font-weight: 600;
}

.lang-switch button {
    background: transparent;
    border: none;
    color: var(--c-text-light);
    cursor: pointer;
    transition: color var(--transition-fast);
}
.lang-switch button:hover, .lang-switch button.active {
    color: var(--c-accent);
}

/* =========================================================================
   UTILITIES & ANIMATIONS
   ========================================================================= */
.text-center { text-align: center; }
.font-bold { font-weight: 700; }

.section-header {
    text-align: left;
    max-width: 800px;
    margin-bottom: var(--spacing-lg);
}
.section-heading {
    letter-spacing: -0.04em;
    margin-bottom: 0.5rem;
}
.section-subheading {
    font-size: 1.25rem;
    color: var(--c-text-light);
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in.appear {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================================================
   PAGE SECTIONS
   ========================================================================= */

/* HERO SECTION */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px; /* Header offset */
    background: linear-gradient(135deg, rgba(248,249,250,1) 0%, rgba(255,255,255,1) 100%);
    overflow: hidden;
}

.hero-bg-gradient {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 60%;
    height: 100%;
    background: radial-gradient(circle, rgba(26,31,54,0.03) 0%, rgba(255,255,255,0) 70%);
    z-index: 0;
}

.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr; /* Asymmetric balance typically rests on tight clustered content on one side */
    max-width: 1000px;
    margin: 0 auto 0 0; /* Left aligned for Swiss feel */
}

.hero-title {
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.05em;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ABOUT SECTION */
.about-container {
    display: grid;
    grid-template-columns: 4fr 6fr; /* Asymmetric grid */
    gap: var(--spacing-lg);
    align-items: center;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 3/4;
    background-color: #E2E8F0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm); /* Minimal radius */
}

.about-content .description {
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
}

/* APPROACH SECTION */
.approach-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.approach-card {
    background: var(--c-bg-main);
    padding: var(--spacing-md);
    border: 1px solid rgba(128,128,128,0.1);
    border-radius: var(--radius-sm);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.approach-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.approach-card .icon-wrapper {
    width: 60px;
    height: 60px;
    background-color: rgba(233, 30, 99, 0.05);
    color: var(--c-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-bottom: 1.5rem;
}

.approach-card h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}


/* SERVICES SECTION */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-sm);
}

.service-card {
    background-color: var(--c-bg-main);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0,0,0,0.03);
}

.service-card i {
    color: var(--c-accent);
    margin-bottom: 1rem;
    width: 32px;
    height: 32px;
}

/* PORTFOLIO SECTION */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.portfolio-item {
    display: flex;
    flex-direction: column;
}

.portfolio-image {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-medium);
}
.portfolio-image:hover {
    transform: scale(1.02);
}

.portfolio-meta h4 {
    margin-bottom: 0.25rem;
    font-size: 1.15rem;
}
.portfolio-meta .metric {
    font-size: 0.95rem;
}

/* WHY US SECTION */
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.why-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.why-item i {
    width: 48px;
    height: 48px;
    color: var(--c-primary);
    margin-bottom: 1rem;
}

/* INSIGHTS SECTION */
.insights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.insight-card {
    background: var(--c-bg-main);
    border: 1px solid rgba(128,128,128,0.1);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    display: flex;
    flex-direction: column;
}

.insight-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.08);
}

.insight-image {
    width: 100%;
    aspect-ratio: 16/9;
}

.insight-content {
    padding: var(--spacing-md);
    flex-grow: 1;
}

.insight-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--c-primary);
    background: rgba(128,128,128,0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    margin-bottom: 1rem;
}

.dark-theme .insight-tag {
    color: var(--c-text-main);
    background: rgba(255,255,255,0.1);
}

.insight-content h4 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

/* CONTACT SECTION */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.contact-text .description {
    font-size: 1.25rem;
}

.contact-form-wrapper {
    background-color: var(--c-bg-main);
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0,0,0,0.08);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--c-primary);
    font-size: 0.9rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #e0e0e0;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    background-color: var(--c-bg-offset);
    transition: border var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--c-accent);
    background-color: #FFF;
}

/* Responsive constraints */
@media (max-width: 900px) {
    .nav {
        display: none; /* Mobile menu hidden by default */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #FFF;
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    }
    .nav.nav-active {
        display: flex;
    }
    .nav a:not(.btn) {
        width: 100%;
        text-align: left;
        padding: 1rem 0;
        border-bottom: 1px solid #f0f0f0;
    }
    .mobile-menu-btn {
        display: block;
    }
    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    .about-container {
        grid-template-columns: 1fr;
    }
    .approach-grid {
        grid-template-columns: 1fr;
    }
    .hero {
        text-align: left;
        align-items: flex-start;
        padding-top: 150px;
    }
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    .insights-grid {
        grid-template-columns: 1fr;
    }
}