/* ============================================
   IT Resident — Main Stylesheet
   Color Palette:
     Primary:    #1e3a5f (deep navy)
     Secondary:  #2563eb (bright blue)
     Accent:     #f59e0b (warm amber)
     Surface:    #f8fafc
     Text:       #1e293b
   ============================================ */

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

:root {
    --c-primary: #1e3a5f;
    --c-secondary: #2563eb;
    --c-accent: #f59e0b;
    --c-accent-hover: #d97706;
    --c-surface: #f8fafc;
    --c-surface-alt: #eef2f7;
    --c-text: #1e293b;
    --c-text-light: #64748b;
    --c-white: #ffffff;
    --c-border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,.1);
    --shadow-lg: 0 8px 40px rgba(0,0,0,.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: .3s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font);
    color: var(--c-text);
    background: var(--c-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Section Titles --- */
.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    text-align: center;
    color: var(--c-primary);
    margin-bottom: 8px;
}

.section-subtitle {
    text-align: center;
    color: var(--c-text-light);
    font-size: 1.05rem;
    margin-bottom: 48px;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition);
    white-space: nowrap;
}

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

.btn--primary:hover {
    background: var(--c-accent-hover);
    border-color: var(--c-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(245,158,11,.35);
}

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

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

.btn--full {
    width: 100%;
}

/* ===================== HEADER ===================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--c-border);
    transition: box-shadow var(--transition);
}

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

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 24px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--c-primary);
}

.logo__icon {
    font-size: 1.6rem;
    animation: spin 8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.logo__accent {
    color: var(--c-secondary);
}

/* Nav */
.nav {
    display: flex;
    gap: 28px;
}

.nav__link {
    font-weight: 500;
    font-size: .95rem;
    color: var(--c-text);
    position: relative;
    padding: 4px 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--c-accent);
    border-radius: 2px;
    transition: width var(--transition);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

/* Header phone */
.header__phone {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    font-size: .95rem;
    color: var(--c-secondary);
}

.header__phone:hover {
    color: var(--c-accent);
}

.header__phone-icon {
    font-size: 1.2rem;
}

/* Burger */
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.burger span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--c-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

.burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.burger.active span:nth-child(2) {
    opacity: 0;
}
.burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===================== HERO ===================== */
.hero {
    background: linear-gradient(135deg, var(--c-primary) 0%, #0f2744 60%, #0c1f38 100%);
    padding: 140px 0 100px;
    color: var(--c-white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37,99,235,.25) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(245,158,11,.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
}

.hero__title-accent {
    color: var(--c-accent);
}

.hero__subtitle {
    font-size: 1.15rem;
    line-height: 1.7;
    color: rgba(255,255,255,.8);
    margin-bottom: 32px;
    max-width: 480px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Hero cards */
.hero__visual {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero__card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: rgba(255,255,255,.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.15);
    border-radius: var(--radius);
    padding: 20px 24px;
    transition: transform var(--transition), background var(--transition);
}

.hero__card:hover {
    transform: translateX(8px);
    background: rgba(255,255,255,.15);
}

.hero__card-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.hero__card-label {
    display: block;
    font-size: .85rem;
    color: rgba(255,255,255,.6);
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 2px;
}

.hero__card-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--c-accent);
}

/* ===================== SERVICES ===================== */
.services {
    padding: 96px 0;
    background: var(--c-surface);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--c-white);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    border: 1px solid var(--c-border);
    transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.service-card__icon {
    font-size: 2.8rem;
    margin-bottom: 16px;
    display: block;
}

.service-card__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 10px;
}

.service-card__text {
    font-size: .93rem;
    color: var(--c-text-light);
    line-height: 1.6;
}

/* ===================== PRICES ===================== */
.prices {
    padding: 96px 0;
    background: var(--c-white);
}

.prices__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.price-card {
    background: var(--c-surface);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--c-border);
    transition: transform var(--transition), box-shadow var(--transition);
}

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

.price-card__header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 24px 24px 16px;
    border-bottom: 1px solid var(--c-border);
}

.price-card__header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--c-primary);
}

.price-card__icon {
    font-size: 1.8rem;
}

.price-card__list {
    list-style: none;
    padding: 8px 0;
}

.price-card__list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    font-size: .93rem;
    border-bottom: 1px solid var(--c-border);
}

.price-card__list li:last-child {
    border-bottom: none;
}

.price-card__list li span:last-child {
    font-weight: 700;
    color: var(--c-secondary);
    white-space: nowrap;
}

/* ===================== CAMERA ===================== */
.camera {
    padding: 96px 0;
    background: var(--c-surface-alt);
}

.camera__wrapper {
    max-width: 720px;
    margin: 0 auto;
}

.camera__placeholder {
    aspect-ratio: 16 / 9;
    background: var(--c-primary);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    position: relative;
}

.camera__placeholder iframe,
.camera__placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: none;
}

.camera__offline {
    text-align: center;
    color: rgba(255,255,255,.7);
    padding: 40px;
}

.camera__offline-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 12px;
    opacity: .5;
}

.camera__offline p {
    margin-bottom: 4px;
}

.camera__offline-hint {
    font-size: .85rem;
    opacity: .6;
}

.camera__info {
    text-align: center;
}

.camera__status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: .95rem;
    margin-bottom: 8px;
}

.camera__dot {
    width: 10px;
    height: 10px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .4; }
}

.camera__note {
    color: var(--c-text-light);
    font-size: .9rem;
}

/* ===================== CONTACT ===================== */
.contact {
    padding: 96px 0;
    background: var(--c-white);
}

.contact__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

/* Form */
.contact-form {
    background: var(--c-surface);
    border-radius: var(--radius);
    padding: 36px;
    border: 1px solid var(--c-border);
}

.contact-form__group {
    margin-bottom: 20px;
}

.contact-form__group label {
    display: block;
    font-size: .9rem;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 6px;
}

.contact-form__group input,
.contact-form__group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: .95rem;
    color: var(--c-text);
    background: var(--c-white);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.contact-form__group input:focus,
.contact-form__group textarea:focus {
    border-color: var(--c-secondary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

.contact-form__group textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form__result {
    margin-top: 16px;
    font-size: .9rem;
    text-align: center;
    min-height: 24px;
}

.contact-form__result.success {
    color: #16a34a;
}

.contact-form__result.error {
    color: #dc2626;
}

/* Contact info */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-info__card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--c-surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--c-border);
    transition: transform var(--transition);
}

.contact-info__card:hover {
    transform: translateX(4px);
}

.contact-info__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--c-white);
    border-radius: var(--radius-sm);
}

.contact-info__card strong {
    display: block;
    font-size: .9rem;
    color: var(--c-primary);
    margin-bottom: 2px;
}

.contact-info__card p {
    font-size: .9rem;
    color: var(--c-text-light);
    line-height: 1.5;
}

.contact-info__card a {
    color: var(--c-secondary);
    font-weight: 600;
}

.contact-info__card a:hover {
    color: var(--c-accent);
}

.contact-info__card--wifi {
    background: linear-gradient(135deg, #eff6ff, #eef2f7);
    border-color: var(--c-secondary);
    border-width: 1px;
}

.contact-info__card--wifi .contact-info__icon {
    background: var(--c-secondary);
    color: var(--c-white);
    font-size: 1.2rem;
}

/* ===================== FOOTER ===================== */
.footer {
    background: var(--c-primary);
    color: rgba(255,255,255,.7);
    padding: 32px 0;
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo--footer .logo__text {
    color: var(--c-white);
}

.logo--footer .logo__icon {
    color: var(--c-accent);
}

.footer__copy {
    font-size: .85rem;
    margin-top: 4px;
}

.footer__right {
    font-size: .85rem;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 900px) {
    .hero__inner {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero__subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__actions {
        justify-content: center;
    }

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

    .prices__grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    .contact__inner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .nav {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--c-white);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--c-border);
        box-shadow: var(--shadow-md);
    }

    .nav.open {
        display: flex;
    }

    .burger {
        display: flex;
    }

    .header__phone-text {
        display: none;
    }

    .hero {
        padding: 120px 0 72px;
    }

    .hero__title {
        font-size: 2rem;
    }

    .services__grid {
        grid-template-columns: 1fr;
    }

    .hero__card {
        padding: 16px 20px;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .contact-form {
        padding: 24px;
    }

    .footer__inner {
        flex-direction: column;
        text-align: center;
    }
}

/* Animations on scroll */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .6s ease, transform .6s ease;
}

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