@import 'variables.css';

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--clr-bg-body);
    color: var(--clr-text-main);
    font-family: var(--ff-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--ff-heading);
    color: var(--clr-primary);
    font-weight: var(--fw-bold);
    line-height: 1.2;
}

h1 {
    font-size: var(--fs-xxl);
}

h2 {
    font-size: var(--fs-xl);
}

h3 {
    font-size: var(--fs-lg);
}

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

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

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: var(--spacing-md);
}

.section-padding {
    padding-block: var(--spacing-lg);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.grid-4 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr 1fr;
    }

    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

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

.text-white {
    color: var(--clr-text-inverse);
}

.bg-surface {
    background-color: var(--clr-bg-surface);
}

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

/* Components */

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-family: var(--ff-heading);
    font-weight: var(--fw-bold);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background-color: #0d3a6b;
    transform: translateY(-2px);
}

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

.btn-accent:hover {
    background-color: #e68a00;
    transform: translateY(-2px);
}

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

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

/* Cards */
.card {
    background: white;
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    height: 100%;
}

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

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

/* Header & Nav */
.site-header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.logo {
    font-family: var(--ff-heading);
    font-size: 1.5rem;
    font-weight: var(--fw-extra-bold);
    color: var(--clr-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: var(--fw-medium);
    color: var(--clr-text-main);
    position: relative;
}

.nav-link:hover {
    color: var(--clr-accent);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(11, 37, 69, 0.8), rgba(11, 37, 69, 0.6)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 8rem 0;
    min-height: 70vh;
    display: flex;
    align-items: center;
    text-align: center;
}

.hero h1 {
    color: white;
    margin-bottom: 1rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-control {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius-sm);
    font-family: var(--ff-body);
}

.form-control:focus {
    outline: none;
    border-color: var(--clr-secondary);
    box-shadow: 0 0 0 3px rgba(0, 126, 167, 0.1);
}

/* Mobile Nav Trigger */
.active-nav {
    color: var(--clr-accent);
}

.mobile-toggle {
    display: none;
    font-size: 2rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        padding: 1rem;
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-list.open {
        display: flex;
    }

    .mobile-toggle {
        display: block;
    }
}

/* Footer */
footer {
    background-color: var(--clr-primary);
    color: white;
    padding-top: var(--spacing-lg);
}

footer a:hover {
    color: var(--clr-accent);
}

footer h3 {
    color: white;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}


footer h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 40px;
    height: 3px;
    background-color: var(--clr-accent);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.hidden {
    display: none !important;
}

/* Specific Project Card filtering transition */
.project-card {
    transition: all 0.3s ease;
}