/* style.css */

:root {
    /* Color Scheme - Neutral with Neo-Brutalism accents */
    --color-background: #ffffff;
    --color-surface: #ffffff;
    --color-surface-alt: #f8f9fa;
    --color-border: #212529;
    --color-text-primary: #212529;
    --color-text-secondary: #495057;
    --color-text-light: #ffffff;
    --color-accent: #005cbb; /* A strong, accessible blue */
    --color-accent-hover: #00438a;
    --color-success: #198754;
    --color-success-hover: #13653f;

    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'DM Sans', sans-serif;

    /* Borders & Shadows (Neo-Brutalism) */
    --border-radius-sharp: 0px;
    --border-radius-soft: 0.25rem;
    --border-strong: 2px solid var(--color-border);
    --shadow-hard: 3px 3px 0px var(--color-border);
    --shadow-hard-hover: 5px 5px 0px var(--color-border);
    --shadow-soft: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-speed: 0.2s;
    --transition-ease: ease-in-out;
}

/* Global Styles */
body {
    font-family: var(--font-body);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    line-height: 1.7;
    font-size: 1rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-primary);
    font-weight: 700;
    margin-bottom: 0.75em;
    line-height: 1.3;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.05); /* Subtle shadow for headers */
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.8rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--color-text-secondary);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-ease);
}

a:hover, a:focus {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

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

/* Section Styling */
section {
    padding: 60px 0;
    overflow: hidden;
}

.section-title {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-text-primary);
    text-shadow: 1px 1px 3px rgba(0,0,0,0.1); /* More pronounced for section titles */
    margin-bottom: 2.5rem !important;
}

.bg-light {
    background-color: var(--color-surface-alt) !important;
}


/* Header / Navbar */
header.sticky-top {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: var(--shadow-soft);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.navbar {
    padding-top: 0.8rem;
    padding-bottom: 0.8rem;
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.75rem;
    color: var(--color-text-primary) !important;
}

.navbar-brand .accent-text {
    color: var(--color-accent);
}

.navbar-nav .nav-link {
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--color-text-secondary) !important;
    padding: 0.5rem 1rem;
    transition: color var(--transition-speed) var(--transition-ease);
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus,
.navbar-nav .nav-link.active {
    color: var(--color-accent) !important;
}

.navbar-nav .nav-link::before {
    content: "";
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-accent);
    visibility: hidden;
    transition: all 0.3s ease-in-out;
}

.navbar-nav .nav-link:hover::before,
.navbar-nav .nav-link.active::before {
    visibility: visible;
    width: 60%;
}

.navbar-toggler {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sharp);
}
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(33, 37, 41, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}


/* Buttons - Global Styles */
.btn, button, input[type='submit'], input[type='button'] {
    font-family: var(--font-body);
    font-weight: 700;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sharp);
    border: var(--border-strong);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-speed) var(--transition-ease);
    box-shadow: var(--shadow-hard);
    position: relative;
    overflow: hidden;
    transform: translate(0,0);
    cursor: pointer;
}

.btn:hover, .btn:focus,
button:hover, button:focus,
input[type='submit']:hover, input[type='submit']:focus,
input[type='button']:hover, input[type='button']:focus {
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-hard-hover);
}

.btn:active,
button:active,
input[type='submit']:active,
input[type='button']:active {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0px var(--color-border);
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-text-light);
    border-color: var(--color-border);
}
.btn-primary:hover, .btn-primary:focus {
    background-color: var(--color-accent-hover);
    color: var(--color-text-light);
    border-color: var(--color-border);
}

.btn-secondary {
    background-color: var(--color-text-secondary);
    color: var(--color-text-light);
    border-color: var(--color-border);
}
.btn-secondary:hover, .btn-secondary:focus {
    background-color: #5a6268;
    color: var(--color-text-light);
    border-color: var(--color-border);
}

.btn-success {
    background-color: var(--color-success);
    color: var(--color-text-light);
    border-color: var(--color-border);
}
.btn-success:hover, .btn-success:focus {
    background-color: var(--color-success-hover);
    color: var(--color-text-light);
    border-color: var(--color-border);
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}
.btn-outline-primary:hover, .btn-outline-primary:focus {
    background-color: var(--color-accent);
    color: var(--color-text-light);
    border-color: var(--color-accent);
}

/* Special for Read More Links if they use .btn-link */
.btn-link {
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--color-accent);
    text-decoration: none;
    padding: 0.25rem 0;
    border: none;
    box-shadow: none;
    text-transform: none;
    letter-spacing: normal;
    transition: color var(--transition-speed) var(--transition-ease), transform var(--transition-speed) var(--transition-ease);
    background-color: transparent; /* Explicitly transparent */
}
.btn-link:hover, .btn-link:focus {
    color: var(--color-accent-hover);
    text-decoration: underline;
    background-color: transparent;
    transform: translateX(4px);
    box-shadow: none;
}
.btn-link::after {
    content: ' →';
    display: inline-block;
    transition: transform 0.2s ease-in-out;
}
.btn-link:hover::after, .btn-link:focus::after {
    transform: translateX(3px);
}

/* Hero Section */
.hero-section {
    color: var(--color-text-light);
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    padding: 120px 0;
    position: relative;
    display: flex;
    align-items: center;
    min-height: 80vh;
}
.hero-section .container {
    position: relative;
    z-index: 2;
}
.hero-title {
    font-size: 3.5rem;
    color: var(--color-text-light) !important;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.6);
}
.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.9) !important;
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}
.hero-cta.btn-primary { /* Specific styling for hero button if needed */
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Cards (Project, News, etc.) */
.card {
    background-color: var(--color-surface);
    border: var(--border-strong);
    border-radius: var(--border-radius-sharp);
    box-shadow: var(--shadow-hard);
    transition: transform var(--transition-speed) var(--transition-ease), box-shadow var(--transition-speed) var(--transition-ease);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center; /* STROGO: Per prompt, centers .card-image and .card-body if not 100% width */
                         /* This will also center text content within its children if they don't span full width */
}

.card:hover {
    transform: translateY(-5px) scale(1.01); /* Subtle scale */
    box-shadow: var(--shadow-hard-hover);
}

.card-image {
    width: 100%; /* STROGO: Per prompt */
    height: 200px;
    overflow: hidden;
    border-bottom: var(--border-strong);
    /* No border-radius here to maintain sharp neo-brutalism at image edge with card */
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* STROGO: Per prompt */
    transition: transform 0.4s ease;
}
.card:hover .card-image img {
    transform: scale(1.05);
}

.card-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    width: 100%; /* STROGO: Per prompt, ensures it uses card width */
    text-align: center; /* STROGO: To center content within card-body */
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-text-primary);
    margin-bottom: 0.75rem;
}

.card-text {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    flex-grow: 1;
    margin-bottom: 1rem;
}
.card .btn {
    margin-top: auto;
    display: inline-block; /* To respect text-align: center of card-body */
}


/* Modal Styles */
.modal-content {
    border-radius: var(--border-radius-sharp);
    border: var(--border-strong);
    box-shadow: var(--shadow-hard);
    background-color: var(--color-surface);
}
.modal-header {
    border-bottom: var(--border-strong);
    padding: 1rem 1.5rem;
}
.modal-header .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}
.modal-title {
    font-family: var(--font-heading);
    color: var(--color-text-primary);
}
.modal-body {
    padding: 1.5rem;
}
.modal-body img {
    border-radius: var(--border-radius-soft);
    margin-bottom: 1rem;
}
.modal-footer {
    border-top: var(--border-strong);
    padding: 1rem 1.5rem;
}


/* Accordion (FAQ) Styles */
.accordion-item {
    background-color: var(--color-surface);
    border: var(--border-strong);
    border-radius: var(--border-radius-sharp) !important;
    margin-bottom: 10px;
    box-shadow: var(--shadow-hard);
}
.accordion-item:first-of-type,
.accordion-item:last-of-type {
    border-radius: var(--border-radius-sharp) !important;
}

.accordion-header {
    margin-bottom: 0;
}

.accordion-button {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--color-text-primary);
    background-color: var(--color-surface);
    border-radius: var(--border-radius-sharp) !important;
    box-shadow: none !important;
    padding: 1rem 1.5rem;
    transition: background-color var(--transition-speed) var(--transition-ease);
}

.accordion-button:not(.collapsed) {
    color: var(--color-accent);
    background-color: #e7f1ff;
    border-bottom: var(--border-strong);
}

.accordion-button:focus {
    z-index: 3;
    border-color: var(--color-accent);
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(var(--bs-accent-rgb), 0.25);
}

.accordion-button::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23212529'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    transition: transform 0.3s ease;
}
.accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23005cbb'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    transform: rotate(-180deg);
}

.accordion-body {
    padding: 1.5rem;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}


/* Forms (Contact Page) */
.form-label {
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.form-control {
    background-color: var(--color-surface);
    border: var(--border-strong);
    border-radius: var(--border-radius-sharp);
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    color: var(--color-text-primary);
    box-shadow: inset 2px 2px 0px rgba(0,0,0,0.03);
    transition: border-color var(--transition-speed) var(--transition-ease), box-shadow var(--transition-speed) var(--transition-ease);
}

.form-control:focus {
    border-color: var(--color-accent);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    outline: 0;
    box-shadow: inset 2px 2px 0px rgba(0,0,0,0.03), 0 0 0 0.2rem rgba(var(--bs-accent-rgb), 0.25);
}
.form-control::placeholder {
    color: #adb5bd;
    opacity: 1;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Contact Preview Section */
.contact-preview-bg {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 80px 0;
}
.contact-preview-bg .section-title,
.contact-preview-bg .lead {
    color: var(--color-text-light) !important;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.6);
}


/* External Resources Section */
#external-resources .list-group-item {
    background-color: transparent;
    border: none;
    padding: 1rem 0;
    border-bottom: 1px solid #dee2e6;
}
#external-resources .list-group-item:last-child {
    border-bottom: none;
}
#external-resources .resource-title a {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 1.1rem;
}
#external-resources .resource-description {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-top: 0.25rem;
}


/* Footer */
.footer-section {
    background-color: var(--color-text-primary);
    color: rgba(255, 255, 255, 0.7);
    padding: 50px 0;
}
.footer-title {
    font-family: var(--font-heading);
    color: var(--color-text-light);
    font-size: 1.75rem;
    margin-bottom: 1rem;
}
.footer-title .accent-text {
    color: var(--color-accent);
}
.footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}
.footer-subtitle {
    font-family: var(--font-heading);
    color: var(--color-text-light);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.footer-links li {
    margin-bottom: 0.5rem;
}
.footer-links a { /* For text-based social links and other footer links */
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-ease), padding-left var(--transition-speed) var(--transition-ease);
    display: inline-block; /* For padding effect */
}
.footer-links a:hover, .footer-links a:focus {
    color: var(--color-text-light);
    padding-left: 5px;
    text-decoration: none;
}
.footer-section hr {
    border-color: rgba(255, 255, 255, 0.2);
}
.footer-copyright p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin-bottom: 0;
}


/* Page Specific Styles */
.privacy-content-page, .terms-content-page, .about-content-page, .contact-content-page { /* Added about and contact */
    padding-top: 100px; /* VАЖНО: Offset for fixed header */
    padding-bottom: 60px;
}
.privacy-content-page h1, .terms-content-page h1, .about-content-page h1, .contact-content-page h1 {
    margin-bottom: 2rem;
    text-align: center; /* Center main title of these pages */
}
.privacy-content-page h2, .terms-content-page h2, .about-content-page h2, .contact-content-page h2 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-size: 1.7rem;
}
.privacy-content-page p, .terms-content-page p, .about-content-page p, .contact-content-page p,
.privacy-content-page ul li, .terms-content-page ul li, .about-content-page ul li, .contact-content-page ul li {
    color: var(--color-text-secondary);
    line-height: 1.8;
}
.privacy-content-page ul, .terms-content-page ul, .about-content-page ul, .contact-content-page ul {
    padding-left: 20px;
    margin-bottom: 1rem;
}


/* Success Page */
.success-page-container {
    min-height: 100vh; /* VАЖНО: Full viewport height */
    display: flex;
    flex-direction: column;
    align-items: center; /* VАЖНО: Center content horizontally */
    justify-content: center; /* VАЖНО: Center content vertically */
    text-align: center;
    padding: 2rem;
    background-color: var(--color-surface-alt);
}
.success-message-box {
    background-color: var(--color-surface);
    padding: 2.5rem 3rem;
    border: var(--border-strong);
    border-radius: var(--border-radius-sharp);
    box-shadow: var(--shadow-hard);
    max-width: 600px;
}
.success-message-box .icon {
    font-size: 3rem; /* Example, if an icon is used */
    color: var(--color-success);
    margin-bottom: 1rem;
}
.success-message-box h1 {
    color: var(--color-success); /* Use success color for title */
}
.success-message-box p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}


/* Parallax Background Effect (Simple CSS version) */
.parallax-bg-simple {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}


/* Glassmorphism */
.glassmorphism {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius-soft);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 4px 30px rgba(0,0,0,0.1);
}

/* Responsive Adjustments */
@media (max-width: 991.98px) {
    .hero-title {
        font-size: 2.8rem;
    }
    .hero-subtitle {
        font-size: 1.1rem;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .navbar-nav {
        margin-top: 1rem;
        background-color: var(--color-surface);
        padding: 1rem;
        border: var(--border-strong);
        box-shadow: var(--shadow-hard);
        border-radius: var(--border-radius-sharp);
    }
    .navbar-nav .nav-link {
        padding: 0.75rem 0.5rem;
        border-bottom: 1px solid #eee;
    }
    .navbar-nav .nav-link:last-child {
        border-bottom: none;
    }
    .navbar-nav .nav-link::before {
        left: 0;
        transform: translateX(0);
        bottom: 5px;
    }
    .navbar-nav .nav-link:hover::before,
    .navbar-nav .nav-link.active::before {
        width: 30px;
    }
    .privacy-content-page, .terms-content-page, .about-content-page, .contact-content-page {
        padding-top: 80px; /* Adjust for potentially taller mobile header */
    }
}

@media (max-width: 767.98px) {
    section {
        padding: 40px 0;
    }
    .hero-section {
        padding: 80px 0;
        min-height: 60vh;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }

    .card .btn {
      /* align-self: stretch; /* Make button full width if needed, but inline-block + text-align:center should handle */
      padding-left: 1rem;
      padding-right: 1rem; /* Adjust padding for smaller buttons */
    }
}