/* File: assets/css/style.css */

/* ===== CSS Variables ===== */
:root {
    --color-primary: #1e3c72;
    --color-primary-dark: #152a52;
    --color-accent: #ffc107;
    --color-accent-hover: #e0a800;
    --color-text: #222;
    --color-text-light: #555;
    --color-bg: #ffffff;
    --color-bg-alt: #f7f9fc;
    --color-border: #e5e9f0;
    --color-white: #ffffff;
    --color-success: #28a745;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    --font-heading: var(--font-sans);

    --container: 1140px;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 20px rgba(30, 60, 114, 0.08);
    --shadow-hover: 0 8px 30px rgba(30, 60, 114, 0.15);
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

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

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

ul {
    list-style: none;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-primary);
}

h1 { font-size: clamp(1.8rem, 5vw, 2.8rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.2rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.5rem); }

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

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 16px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-primary-dark);
    border-color: var(--color-accent);
}

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

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

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

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

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

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-white);
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-primary);
}

.logo img {
    border-radius: 50%;
}

.logo-text {
    display: none;
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav-toggle span {
    display: block;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

.main-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: 20px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.main-nav ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.main-nav a {
    display: block;
    padding: 12px 16px;
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius-sm);
}

.main-nav a:hover,
.main-nav a.active {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

.header-cta {
    display: none;
}

/* ===== Hero ===== */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2a5298 100%);
    color: var(--color-white);
    padding: 60px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,193,7,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 640px;
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: 16px;
}

.hero .slogan {
    font-size: 1.25rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 20px;
}

.hero p {
    color: rgba(255,255,255,0.85);
    font-size: 1.05rem;
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 48px;
}

.stat-item {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(8px);
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
}

.stat-item strong {
    display: block;
    font-size: 1.8rem;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.stat-item span {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.8);
}

/* ===== Sections ===== */
.section {
    padding: 60px 0;
}

.section-alt {
    background: var(--color-bg-alt);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 40px;
}

.section-header h2 {
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.05rem;
}

/* ===== Cards / Services ===== */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.service-card {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
    border: 1px solid var(--color-border);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary), #2a5298);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--color-accent);
}

.service-card h3 {
    margin-bottom: 10px;
}

.service-card p {
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.service-price {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.1rem;
}

/* ===== Portfolio ===== */
.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 4/3;
    box-shadow: var(--shadow);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.portfolio-item:hover img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(30,60,114,0.85) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 1;
}

.portfolio-overlay h3 {
    color: var(--color-white);
    font-size: 1.15rem;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    gap: 40px;
    align-items: center;
}

.about-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-image img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.about-content h2 {
    margin-bottom: 16px;
}

.about-list {
    margin: 24px 0;
}

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--color-text-light);
}

.about-list li svg {
    flex-shrink: 0;
    color: var(--color-success);
    margin-top: 3px;
}

/* ===== Advantages ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.advantage-item {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--color-border);
}

.advantage-icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg-alt);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-primary);
}

.advantage-item h3 {
    font-size: 1.1rem;
    margin-bottom: 6px;
}

.advantage-item p {
    font-size: 0.9rem;
    margin: 0;
}

/* ===== CTA ===== */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2a5298 100%);
    color: var(--color-white);
    text-align: center;
    padding: 60px 0;
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: 12px;
}

.cta-section p {
    color: rgba(255,255,255,0.85);
    max-width: 500px;
    margin: 0 auto 28px;
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    gap: 40px;
}

.contact-info {
    display: grid;
    gap: 20px;
}

.contact-card {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
}

.contact-card svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

.contact-card h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-card p, .contact-card a {
    font-size: 0.95rem;
    margin: 0;
}

#yandex-form-placeholder {
    background: var(--color-bg-alt);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    padding: 40px 20px;
    text-align: center;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

#yandex-form-placeholder p {
    margin: 0;
    color: var(--color-text-light);
}

/* ===== Footer ===== */
.site-footer {
    margin-top: auto;
    background: var(--color-primary-dark);
    color: rgba(255,255,255,0.8);
    padding-top: 50px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--color-white);
    margin-bottom: 12px;
}

.footer-logo img {
    border-radius: 50%;
}

.footer-desc {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.65);
    margin: 0;
}

.footer-col h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: 16px;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col a {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

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

.contact-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.contact-list svg {
    flex-shrink: 0;
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

.footer-note {
    margin-top: 4px !important;
}

/* ===== Media Queries ===== */
@media (min-width: 480px) {
    .logo-text {
        display: inline;
    }

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

@media (min-width: 768px) {
    .container {
        padding: 0 24px;
    }

    .header-inner {
        height: 80px;
    }

    .nav-toggle {
        display: none;
    }

    .main-nav {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        background: none;
        box-shadow: none;
        padding: 0;
    }

    .main-nav ul {
        flex-direction: row;
        gap: 4px;
    }

    .main-nav a {
        padding: 8px 14px;
        font-size: 0.95rem;
    }

    .header-cta {
        display: inline-flex;
        padding: 10px 18px;
        font-size: 0.9rem;
    }

    .hero {
        padding: 80px 0 100px;
    }

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

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

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

    .about-grid {
        grid-template-columns: 1fr 1.2fr;
    }

    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    }

    .contact-grid {
        grid-template-columns: 1fr 1.3fr;
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

    .section {
        padding: 80px 0;
    }
}

@media (min-width: 1200px) {
    .container {
        padding: 0 16px;
    }
}