/* --- Variables & Reset --- */
:root {
    --color-bg: #FFFFFF;
    --color-text: #333333;
    --color-text-light: #555555;
    --color-accent: #C5A065; /* Warm Gold */
    --color-accent-dark: #A38048;
    --color-light-grey: #F9F9FB;
    --color-dark: #1A1A1A;
    --color-white: #FFFFFF;

    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 1rem;     /* 16px */
    --spacing-md: 2rem;     /* 32px */
    --spacing-lg: 4rem;     /* 64px */
    --spacing-xl: 8rem;     /* 128px */

    --container-width: 1200px;
    --header-height: 80px;
    
    --shadow-card: 0 10px 30px rgba(0,0,0,0.05);
    --shadow-hover: 0 20px 40px rgba(0,0,0,0.08);
    --transition-fast: 0.3s ease;
    --transition-smooth: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-dark);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

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

ul {
    list-style: none;
}

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

/* --- Container & Utility --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-white { color: var(--color-white); }
.bg-light { background-color: var(--color-light-grey); }
.bg-dark { background-color: var(--color-dark); }

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 600;
}

.divider {
    width: 60px;
    height: 3px;
    background-color: var(--color-accent);
    margin: var(--spacing-sm) auto 0;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: 0.5px;
    border-radius: 2px;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-transform: uppercase;
    font-size: 0.9rem;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--color-dark);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-light {
    background-color: var(--color-white);
    color: var(--color-dark);
    border: 2px solid var(--color-white);
}

.btn-light:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-white);
}

.btn-outline-light {
    border-color: var(--color-white);
    color: var(--color-white);
}

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

.btn-text {
    color: var(--color-accent);
    text-transform: none;
    font-weight: 600;
    margin-left: var(--spacing-md);
    position: relative;
    padding: 14px 0;
}

.btn-text::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-fast);
}

.btn-text:hover::after {
    width: 100%;
}


/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    box-shadow: 0 1px 0 rgba(0,0,0,0.05);
    transition: transform var(--transition-fast);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
}

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

.btn-nav {
    padding: 10px 24px;
    border: 1px solid var(--color-dark);
    border-radius: 2px;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--color-dark);
    transition: var(--transition-fast);
}

/* --- Hero Section --- */
.hero {
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    padding-bottom: var(--spacing-xl);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.eyebrow {
    display: block;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-subtext {
    font-size: 1.15rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
    max-width: 90%;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.image-wrapper {
    width: 400px; /* specific size for the image wrapper */
    height: 500px;
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 20px 20px 0 var(--color-light-grey);
    animation: float 6s ease-in-out infinite;
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}


@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

/* --- About Section --- */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.lead-text {
    font-size: 1.5rem;
    font-family: var(--font-heading);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.about-content p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

.emphasis {
    font-weight: 600;
    color: var(--color-accent-dark) !important;
    margin-top: var(--spacing-md) !important;
    display: block;
}

/* --- Expertise Section --- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.card {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 4px;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
    position: relative;
    top: 0;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-card);
    border-color: rgba(197, 160, 101, 0.2); /* faint accent border */
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-heading);
}

.card p {
    font-size: 1rem;
    color: var(--color-text-light);
}

/* --- Impact Section --- */
.impact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    text-align: center;
}

.stat-item .counter {
    font-size: 3.5rem;
    font-weight: 700;
    font-family: var(--font-heading);
    color: var(--color-accent);
    line-height: 1;
    display: inline-block;
}

.stat-item span {
    font-size: 3.5rem;
    font-weight: 700;
    font-family: var(--font-heading);
    color: var(--color-accent);
    line-height: 1;
}

.stat-item p {
    margin-top: var(--spacing-xs);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

/* --- Methodology Section --- */
.timeline-wrapper {
    position: relative;
    padding: var(--spacing-lg) 0;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    top: 30px; /* Adjust based on icon/marker size */
    left: 0;
    width: 0%; /* distinct animation start */
    height: 2px;
    background-color: var(--color-accent);
    z-index: 1;
    transition: width 2s ease-in-out;
}

.timeline-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 2;
}

.step {
    flex: 1;
    text-align: center;
    padding: 0 var(--spacing-xs);
    opacity: 0; /* Hidden initially */
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.step-marker {
    width: 16px;
    height: 16px;
    background-color: var(--color-white);
    border: 3px solid var(--color-accent);
    border-radius: 50%;
    margin: 0 auto var(--spacing-md); /* Aligns with line top */
    position: relative;
    top: 22px; /* Adjust to align circle center with line */
}

.step h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.step p {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

/* Reveal Animation State */
.timeline-wrapper.visible .timeline-line {
    width: 100%;
}
.timeline-wrapper.visible .step {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger Steps */
.timeline-wrapper.visible .step:nth-child(1) { transition-delay: 0.2s; }
.timeline-wrapper.visible .step:nth-child(2) { transition-delay: 0.7s; }
.timeline-wrapper.visible .step:nth-child(3) { transition-delay: 1.2s; }
.timeline-wrapper.visible .step:nth-child(4) { transition-delay: 1.7s; }


/* --- Partnership Section --- */
.partnership-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.partnership-content h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

/* --- Contact Section --- */
.contact-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-content h2 {
    color: var(--color-white);
    font-size: 2.8rem;
    margin-bottom: var(--spacing-md);
}

.contact-content p {
    font-size: 1.2rem;
    color: #cccccc;
    margin-bottom: var(--spacing-lg);
}

.contact-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    align-items: center;
}


/* --- Footer --- */
.footer {
    padding: var(--spacing-md) 0;
    text-align: center;
    border-top: 1px solid #eee;
    font-size: 0.9rem;
    color: var(--color-text-light);
}


/* --- Animation Utilities --- */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in {
    opacity: 0;
    transition: opacity 1s ease-out;
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }


/* --- Responsive Design --- */
@media (max-width: 900px) {
    :root {
        --header-height: 70px;
        --spacing-xl: 4rem;
        --spacing-md: 1.5rem;
    }
    
    .hero h1 { font-size: 2.8rem; }
    
    .hero-container {
        flex-direction: column-reverse;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
        display: flex; /* Flex context needed to center align items in column direction */
        flex-direction: column;
        align-items: center; /* Center horizontally */
    }

    .hero-buttons {
        justify-content: center; /* Center buttons horizontally */
    }

    .image-wrapper {
        width: 300px;
        height: 380px;
        margin: 0 auto;
    }

    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline-steps {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .timeline-line {
        width: 2px !important; /* Force vertical line */
        height: 0; /* vertical height animated */
        left: 20px; /* Aligned with marker center */
        top: 0;
        transition: height 2s ease;
    }
    
    .timeline-wrapper.visible .timeline-line {
        height: 100%;
    }

    .step {
        text-align: left;
        padding-left: 50px;
        position: relative;
    }

    .step-marker {
        position: absolute;
        left: 12px; /* centered on line at left:20px (marker width 16px) */
        top: 5px;
        margin: 0;
    }
    
    .impact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .nav-links { display: none; } /* Add JS toggle later if needed or keep simple */
    .hamburger { display: flex; }
    
    .hero h1 { font-size: 2.2rem; }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }

    .impact-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .contact-buttons .btn {
        width: 100%;
        text-align: center;
    }
    
    .btn-text {
        margin-left: 0;
    }
}