/* --- CSS Variables & Design System --- */
:root {
    /* Brand Colors derived from PTP Logo */
    --primary: #4196C1; /* The lighter distinct blue */
    --primary-dark: #2F6C8C; 
    --secondary: #486A7D; /* The slate/dark blue from overlapping bubble */
    --accent: #E5F3FA;
    
    /* Neutrals */
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-600: #475569;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Utils */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* offset for sticky nav */
}

body {
    font-family: var(--font-body);
    color: var(--gray-800);
    line-height: 1.6;
    background-color: var(--gray-50);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--gray-900);
    line-height: 1.2;
}

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

a:hover {
    color: var(--primary-dark);
}

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

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

/* --- Containers --- */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 5rem 2rem;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--white);
}

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

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

.btn-block {
    display: block;
    width: 100%;
}

/* --- Navigation --- */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

nav.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

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

.logo-main::after {
    /* Optional: Small blue dot if wanted */
    content: '.';
    color: var(--primary);
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--primary);
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 1px;
}

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

.nav-links a:not(.btn) {
    font-weight: 500;
    color: var(--gray-600);
}

.nav-links a:not(.btn):hover {
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-800);
    cursor: pointer;
}

/* --- Hero Section --- */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--accent) 100%);
    padding-top: 80px; /* Offset nav */
    position: relative;
    overflow: hidden;
}

/* Decorative background blur */
.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -5%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(65, 150, 193, 0.15) 0%, rgba(255,255,255,0) 70%);
    z-index: 0;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-content .highlight {
    color: var(--primary);
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-inline: auto;
}

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

/* --- About Section --- */
.about {
    background-color: var(--white);
}

.about-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem auto;
}

.about-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.about-header p {
    font-size: 1.1rem;
    color: var(--gray-600);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.team-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--gray-100);
}

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

.team-img-wrapper {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background-color: var(--gray-100);
}

.team-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.team-card:hover .team-img-wrapper img {
    transform: scale(1.05);
}

.team-info {
    padding: 1.5rem;
    text-align: center;
}

.team-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.team-info .role {
    display: block;
    color: var(--secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.linkedin-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 500;
    font-size: 0.875rem;
}

/* --- Services Section --- */
.services {
    background-color: var(--gray-50);
}

.services h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border-top: 4px solid var(--primary);
}

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

.service-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

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

.service-card p {
    color: var(--gray-600);
}

/* --- Job Board Section --- */
.jobs {
    background-color: var(--white);
}

.jobs-header {
    text-align: center;
    margin-bottom: 3rem;
}

.jobs-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.jobs-header p {
    color: var(--gray-600);
}

.jobs-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.job-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    padding: 1.5rem 2rem;
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.job-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.job-main h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--secondary);
}

.job-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.job-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.job-action {
    display: flex;
    align-items: center;
}

/* --- Contact Section --- */
.contact {
    background-color: var(--gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-info > p {
    color: var(--gray-600);
    margin-bottom: 2.5rem;
}

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

.method {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.method i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 0.25rem;
}

.method h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.method p {
    color: var(--gray-600);
    margin: 0;
}

.contact-form-wrapper {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form-wrapper h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.ptp-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.ptp-form input[type="text"],
.ptp-form input[type="email"],
.ptp-form select,
.ptp-form textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.ptp-form input:focus,
.ptp-form select:focus,
.ptp-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(65, 150, 193, 0.1);
}

.ptp-form input[type="file"] {
    display: block;
    width: 100%;
    padding: 0.5rem 0;
    font-size: 0.875rem;
}

.ptp-form small {
    display: block;
    margin-top: 0.25rem;
    color: var(--gray-600);
}

/* --- Footer --- */
footer {
    background-color: var(--secondary);
    color: var(--white);
    padding: 3rem 0 0 0;
}

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

.footer-brand .logo-main {
    color: var(--white);
    font-size: 2rem;
}

.footer-brand p {
    color: var(--accent);
    margin-top: 0.5rem;
}

.footer-bottom {
    margin-top: 3rem;
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 0.875rem;
    color: var(--accent);
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .nav-links {
        display: none; /* simple hidden for now, can be toggled via JS if needed */
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .job-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .job-action {
        width: 100%;
    }
    
    .job-action .btn {
        width: 100%;
    }
}