/* ============================================================
   Терек24 — фирменный стиль (красный / оранжевый / жёлтый)
   ============================================================ */

:root {
    --color-primary: #c41e24;
    --color-primary-dark: #8b1015;
    --color-primary-light: #ff6b2c;
    --color-accent: #ffd100;
    --color-accent-dark: #0d1b2a;
    --color-success: #2d6a4f;
    --color-danger: #c41e24;
    --color-warning: #ffd100;
    --color-bg: #fff8f5;
    --color-surface: #ffffff;
    --color-text: #0d1b2a;
    --color-text-secondary: #6b7280;
    --color-border: #f0ddd8;
    --color-shadow: rgba(196, 30, 36, 0.08);
    --color-shadow-lg: rgba(196, 30, 36, 0.16);
    --gradient-brand: linear-gradient(135deg, #8b1015 0%, #c41e24 40%, #e84e1b 75%, #ff6b2c 100%);
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    --nav-height: 72px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --flip-duration: 600ms;
    --font: 'Segoe UI', system-ui, -apple-system, Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

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

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ---- App Layout ---- */
.app {
    min-height: 100vh;
    padding-bottom: calc(var(--nav-height) + 20px);
}

.main {
    padding: 0 16px 20px;
    max-width: 768px;
    margin: 0 auto;
}

/* ---- Header ---- */
.header {
    background: var(--gradient-brand);
    padding: 22px 16px 26px;
    position: sticky;
    top: 0;
    z-index: 100;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: 0 4px 24px rgba(196, 30, 36, 0.35);
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 80% 20%, rgba(255, 209, 0, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 10% 90%, rgba(0, 0, 0, 0.12) 0%, transparent 40%);
    pointer-events: none;
}

.header__logo {
    text-align: center;
    position: relative;
    z-index: 1;
}

.header__logo-link {
    display: inline-block;
    text-decoration: none;
}

.header__logo-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.header__logo-text {
    font-size: 34px;
    font-weight: 900;
    font-style: italic;
    color: #ffffff;
    letter-spacing: 0.04em;
    line-height: 1;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
    text-transform: uppercase;
}

.header__logo-accent {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-accent-dark);
    font-weight: 900;
    font-style: italic;
    padding: 2px 14px;
    border-radius: 6px;
    transform: skewX(-6deg);
    margin-left: 4px;
    text-shadow: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.header__logo-subtitle {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.header__logo-dot {
    display: none;
}

/* ---- Categories Scroll ---- */
.categories-scroll {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 20px 0 8px;
    margin: 0 -4px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.categories-scroll::-webkit-scrollbar {
    display: none;
}

.category-chip {
    flex-shrink: 0;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition);
    scroll-snap-align: start;
    box-shadow: 0 2px 6px var(--color-shadow);
}

.category-chip--active {
    background: var(--gradient-brand);
    color: white;
    border-color: var(--color-primary);
    box-shadow: 0 4px 14px rgba(196, 30, 36, 0.35);
    transform: translateY(-1px);
}

.category-chip:active {
    transform: scale(0.96);
}

/* ---- Cards Grid ---- */
.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 520px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ---- Flip Card ---- */
.flip-card {
    perspective: 1000px;
    height: 340px;
    cursor: pointer;
    position: relative;
}

.flip-card__inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform var(--flip-duration) cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.flip-card--flipped .flip-card__inner {
    transform: rotateY(180deg);
}

.flip-card__front,
.flip-card__back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-surface);
    box-shadow: 0 4px 20px var(--color-shadow-lg);
    border: 1px solid var(--color-border);
}

.flip-card__back {
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    padding: 18px;
    overflow-y: auto;
    background: linear-gradient(180deg, #ffffff 0%, #faf8f5 100%);
}

/* Front side */
.card-front__image-wrap {
    position: relative;
    height: 190px;
    overflow: hidden;
    background: #e8e2d9;
}

.card-front__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.flip-card:active .card-front__image {
    transform: scale(1.04);
}

.card-front__image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(27, 38, 59, 0.55) 0%, transparent 50%);
    pointer-events: none;
}

.card-front__category-badge {
    position: absolute;
    bottom: 10px;
    left: 12px;
    background: var(--color-accent);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    color: var(--color-accent-dark);
    z-index: 1;
    transform: skewX(-4deg);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.card-front__fav {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    z-index: 2;
    transition: transform 0.2s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.card-front__fav--active {
    animation: heartBeat 0.4s ease;
}

@keyframes heartBeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.25); }
}

.card-front__body {
    padding: 14px 16px 16px;
}

.card-front__title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--color-text);
}

.card-front__meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.card-front__rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--color-accent-dark);
    font-weight: 700;
    font-size: 14px;
}

.card-front__rating-stars {
    color: var(--color-warning);
    font-size: 13px;
    letter-spacing: -1px;
}

.card-front__status {
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
}

.card-front__status--open {
    background: #fff3cd;
    color: #856404;
}

.card-front__status--closed {
    background: #f8d7da;
    color: var(--color-danger);
}

.card-front__hint {
    margin-top: 10px;
    font-size: 11px;
    color: var(--color-text-secondary);
    text-align: center;
    opacity: 0.7;
}

/* Back side */
.card-back__title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-primary-dark);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-border);
}

.card-back__info {
    font-size: 13px;
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.45;
    padding: 6px 0;
}

.card-back__info-icon {
    flex-shrink: 0;
    width: 22px;
    text-align: center;
}

.card-back__info a {
    word-break: break-all;
    color: var(--color-primary);
    font-weight: 500;
}

.card-back__services {
    margin: 10px 0;
    flex: 1;
}

.card-back__services-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}

.card-back__services-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.card-back__services-list li {
    background: #fff8f5;
    border: 1px solid var(--color-border);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    color: var(--color-text);
}

.card-back__services-list li::before {
    content: none;
}

.card-back__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
    padding-top: 12px;
}

.card-back__actions .btn {
    flex: 1;
    min-width: calc(50% - 4px);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    transition: all var(--transition);
    text-align: center;
    white-space: nowrap;
}

.btn--primary {
    background: var(--gradient-brand);
    color: white;
    box-shadow: 0 2px 10px rgba(196, 30, 36, 0.3);
    border: none;
}

.btn--primary:hover {
    filter: brightness(1.05);
}

.btn--outline {
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    color: var(--color-text);
}

.btn--success {
    background: #25d366;
    color: white;
}

.btn--sm {
    padding: 8px 12px;
    font-size: 12px;
}

.btn:active {
    transform: scale(0.96);
}

/* ---- Bottom Navigation ---- */
.bottom-nav {
    position: fixed;
    bottom: 12px;
    left: 12px;
    right: 12px;
    height: calc(var(--nav-height) - 12px);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 24px var(--color-shadow-lg);
    border: 2px solid rgba(196, 30, 36, 0.1);
    z-index: 200;
    max-width: 480px;
    margin: 0 auto;
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.bottom-nav__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 8px 14px;
    color: var(--color-text-secondary);
    transition: all var(--transition);
    font-size: 10px;
    font-weight: 500;
    border-radius: var(--radius-md);
}

.bottom-nav__icon {
    font-size: 22px;
    transition: transform 0.2s;
}

.bottom-nav__item--active {
    color: var(--color-primary);
    background: rgba(196, 30, 36, 0.08);
}

.bottom-nav__item--active .bottom-nav__icon {
    transform: scale(1.1);
}

.bottom-nav__item:active {
    transform: scale(0.92);
}

/* ---- Skeleton Loader ---- */
.skeleton {
    background: linear-gradient(90deg, #f0ddd8 25%, #faf0ed 50%, #f0ddd8 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-card {
    height: 340px;
    border-radius: var(--radius-lg);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ---- Animations ---- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

.scale-in {
    animation: scaleIn 0.45s ease forwards;
}

/* ---- Ripple Effect ---- */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: rippleAnim 0.6s ease-out;
    pointer-events: none;
}

@keyframes rippleAnim {
    to { transform: scale(4); opacity: 0; }
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 56px 24px;
    color: var(--color-text-secondary);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--color-border);
}

.empty-state__icon {
    font-size: 52px;
    margin-bottom: 12px;
}

.empty-state__title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

/* ---- Page Sections ---- */
.page-title {
    font-size: 24px;
    font-weight: 800;
    margin: 20px 0 8px;
    color: var(--color-primary-dark);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 12px 0 4px;
}

.section-header__title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.section-header__count {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* ---- Categories Page ---- */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    padding: 12px 0;
}

.category-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 28px 16px;
    text-align: center;
    box-shadow: 0 4px 16px var(--color-shadow);
    border: 2px solid var(--color-border);
    transition: all var(--transition);
    cursor: pointer;
}

.category-card:active {
    transform: scale(0.96);
    border-color: var(--color-primary);
    box-shadow: 0 2px 12px rgba(196, 30, 36, 0.2);
}

.category-card__icon {
    font-size: 40px;
    margin-bottom: 10px;
}

.category-card__name {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text);
}

.category-card__count {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

/* ---- Profile Page ---- */
.profile-card {
    background: var(--gradient-brand);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
    box-shadow: 0 4px 24px rgba(196, 30, 36, 0.35);
    margin: 16px 0;
    color: white;
    position: relative;
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 90% 10%, rgba(255, 209, 0, 0.2) 0%, transparent 50%);
    pointer-events: none;
}

.profile-card__avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 12px;
    border: 3px solid rgba(255, 255, 255, 0.4);
}

.profile-card__name {
    font-size: 20px;
    font-weight: 700;
}

.profile-card__subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    margin-top: 4px;
}

.profile-menu {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 16px var(--color-shadow);
    border: 1px solid var(--color-border);
}

.profile-menu__item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    transition: background var(--transition);
    font-weight: 500;
}

.profile-menu__item:last-child {
    border-bottom: none;
}

.profile-menu__item:active {
    background: var(--color-bg);
}

.profile-menu__icon {
    font-size: 22px;
    width: 32px;
    text-align: center;
}

/* ---- Results info ---- */
.results-info {
    font-size: 13px;
    color: var(--color-text-secondary);
    padding: 4px 0 12px;
}

/* ---- Toast ---- */
.toast {
    position: fixed;
    bottom: calc(var(--nav-height) + 24px);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-accent-dark);
    color: var(--color-accent);
    padding: 12px 22px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    z-index: 400;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.toast--visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ---- Responsive ---- */
@media (max-width: 359px) {
    .card-back__actions .btn {
        min-width: 100%;
    }

    .flip-card {
        height: 320px;
    }
}

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

    .bottom-nav {
        left: 50%;
        right: auto;
        transform: translateX(-50%);
        width: 100%;
        max-width: 480px;
    }
}