@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Montserrat:wght@500;700;800&display=swap');

:root {
    --cool-white: #f4f7f9;
    --pure-white: #ffffff;
    --charcoal: #2b303a;
    --charcoal-light: #4a5568;
    --cobalt: #004aad;
    --cobalt-hover: #003680;
    --cobalt-transparent: rgba(0, 74, 173, 0.08);
    --accent-copper: #c25915;
    --border-color: #cbd5e1;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--cool-white);
    color: var(--charcoal);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* headings & structural text */
h1, h2, h3, .logo, .nav-links a, button, .filter-btn {
    font-family: 'Montserrat', sans-serif;
    text-transform: uppercase;
    color: var(--charcoal);
    letter-spacing: 0.5px;
}

/* header & navigation */
header {
    background: var(--pure-white);
    padding: 1.5rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--cobalt);
    letter-spacing: 1.5px;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--charcoal-light);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
    transition: color 0.2s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -6px;
    left: 0;
    background-color: var(--accent-copper);
    transition: width 0.3s ease;
    transform: skewX(-20deg);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--cobalt);
    font-size: 1.8rem;
    cursor: pointer;
}

/* layout */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    flex-grow: 1;
}

/* hero container shadows */
.hero-wrapper {
    margin-bottom: 4rem;
    filter: drop-shadow(0px 10px 20px rgba(43, 48, 58, 0.15));
}

.hero {
    text-align: left;
    padding: 4rem;
    background: var(--pure-white);
    position: relative;
    clip-path: polygon(0 0, calc(100% - 40px) 0, 100% 40px, 100% 100%, 40px 100%, 0 calc(100% - 40px));
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40px;
    height: 40px;
    background-color: var(--cobalt);
    clip-path: polygon(100% 0, 0 0, 100% 100%);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--charcoal);
    font-weight: 800;
}

.hero p {
    font-size: 1.15rem;
    max-width: 800px;
    color: var(--charcoal-light);
}

/* grid and cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

/* card container shadows and hover effects */
.card-wrapper {
    filter: drop-shadow(0px 8px 16px rgba(43, 48, 58, 0.12));
    transition: transform 0.2s;
}

.card-wrapper:hover {
    transform: translateY(-4px);
}

.card {
    background: var(--pure-white);
    padding: 2.5rem;
    position: relative;
    height: 100%;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
    border-top: 4px solid var(--cobalt);
}

.card::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 30px;
    height: 30px;
    background-color: var(--accent-copper);
    clip-path: polygon(100% 0, 0 100%, 100% 100%);
}

.card h2 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
    color: var(--cobalt);
}

/* filter menu */
.filter-menu {
    display: flex;
    justify-content: flex-start;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

/* buttons */
button, .filter-btn {
    background: var(--charcoal-light);
    color: var(--pure-white);
    border: none;
    padding: 1rem 2rem;
    font-size: 0.95rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 15px, 100% 100%, 15px 100%, 0 calc(100% - 15px));
}

button[type="submit"] {
    background: var(--cobalt);
    width: 100%;
}

button:hover, button[type="submit"]:hover, .filter-btn:hover, .filter-btn.active {
    background: var(--cobalt);
}

/* contact form shadows */
.contact-wrapper {
    max-width: 800px;
    margin: 0 auto;
    filter: drop-shadow(0px 10px 20px rgba(43, 48, 58, 0.15));
}

.contact-form {
    background: var(--pure-white);
    padding: 3rem;
    position: relative;
    clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 8px;
    background-color: var(--cobalt);
}

.form-group {
    margin-bottom: 1.8rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--charcoal);
    font-weight: 600;
    font-size: 0.9rem;
    font-family: 'Montserrat', sans-serif;
    text-transform: uppercase;
}

input, textarea {
    width: 100%;
    padding: 1rem;
    background: var(--cool-white);
    border: 2px solid transparent;
    color: var(--charcoal);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: border-color 0.2s, background-color 0.2s;
    border-radius: 0; 
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--cobalt);
    background: var(--pure-white);
}

/* footer */
footer {
    background: var(--pure-white);
    border-top: 3px solid var(--charcoal);
    color: var(--charcoal-light);
    text-align: center;
    padding: 2rem;
    font-size: 0.9rem;
}

/* responsive */
@media (max-width: 768px) {
    .menu-toggle { display: block; }
    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 100%;
        left: 0;
        background: var(--pure-white);
        box-shadow: 0 8px 15px rgba(0, 0, 0, 0.08);
        padding: 1rem 0;
    }
    .nav-links.active { display: flex; }
    .nav-links li { text-align: center; padding: 1rem 0; }
    .hero { padding: 2.5rem; clip-path: polygon(0 0, calc(100% - 25px) 0, 100% 25px, 100% 100%, 25px 100%, 0 calc(100% - 25px)); }
    .hero h1 { font-size: 2.2rem; }
}