/* ========================================
   Pet Deals - Pet Comfort & Wellness Store
   Mobile-first responsive design
   ======================================== */

/* --- CSS Variables --- */
:root {
    --color-primary: #FF6B35;
    --color-primary-dark: #E55A2B;
    --color-primary-light: #FFF0EB;
    --color-secondary: #2D3436;
    --color-accent: #00B894;
    --color-accent-light: #E8FBF5;
    --color-text: #2D3436;
    --color-text-light: #636E72;
    --color-text-lighter: #B2BEC3;
    --color-bg: #FFFFFF;
    --color-bg-soft: #F8F9FA;
    --color-bg-warm: #FFF8F5;
    --color-border: #E9ECEF;
    --color-star: #F9CA24;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 999px;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
    --transition: 0.3s ease;
    --container-max: 1200px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
}

/* --- Container --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
}

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

.btn--outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn--lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

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

/* --- Section Headers --- */
.section-tag {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 12px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto;
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}

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

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-secondary);
}

.nav__logo-icon {
    font-size: 1.6rem;
}

.nav__menu {
    display: none;
    gap: 32px;
}

.nav__link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-light);
    position: relative;
    padding: 4px 0;
}

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

.nav__link:hover {
    color: var(--color-primary);
}

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

.nav__cta {
    display: none;
    padding: 10px 24px;
    font-size: 0.9rem;
}

.nav__toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav__toggle-bar {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--color-secondary);
    border-radius: 2px;
    transition: all var(--transition);
}

/* Mobile menu open state */
.nav__menu--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #fff;
    padding: 24px 20px;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s ease;
}

.nav__menu--open .nav__item {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}

.nav__menu--open .nav__item:last-child {
    border-bottom: none;
}

.nav__menu--open .nav__link {
    font-size: 1.1rem;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.nav__toggle--open .nav__toggle-bar:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}

.nav__toggle--open .nav__toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav__toggle--open .nav__toggle-bar:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, var(--color-bg-warm) 0%, #fff 50%, var(--color-accent-light) 100%);
    overflow: hidden;
}

.hero__container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.hero__badge {
    display: inline-block;
    background: var(--color-accent-light);
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 6vw, 3.8rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-secondary);
    margin-bottom: 20px;
}

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

.hero__text {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 480px;
    margin-bottom: 28px;
    line-height: 1.7;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 36px;
}

.hero__stats {
    display: flex;
    gap: 32px;
}

.hero__stat {
    display: flex;
    flex-direction: column;
}

.hero__stat-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-secondary);
}

.hero__stat-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

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

.hero__image-photo {
    width: 100%;
    max-width: 480px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

/* ========================================
   TRUST BAR
   ======================================== */
.trust-bar {
    background: var(--color-secondary);
    padding: 24px 0;
}

.trust-bar__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.trust-bar__item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
}

.trust-bar__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.trust-bar__item strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
}

.trust-bar__item span {
    font-size: 0.8rem;
    opacity: 0.7;
}

/* ========================================
   PRODUCTS
   ======================================== */
.products {
    padding: 80px 0;
    background: var(--color-bg-soft);
}

.products__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.products__cta {
    text-align: center;
    margin-top: 40px;
}

.product-card {
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.product-card__image {
    position: relative;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.product-card:hover .product-card__image img {
    transform: scale(1.05);
}

.product-card__placeholder {
    font-size: 4rem;
}

.product-card__badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.product-card__badge--new {
    background: var(--color-accent);
}

.product-card__badge--hot {
    background: #E74C3C;
}

.product-card__info {
    padding: 20px;
}

.product-card__category {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product-card__name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin: 6px 0 8px;
}

.product-card__desc {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.5;
    margin-bottom: 16px;
}

.product-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.product-card__price-current {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-secondary);
}

.product-card__price-old {
    font-size: 0.9rem;
    color: var(--color-text-lighter);
    text-decoration: line-through;
    margin-left: 8px;
}

.product-card__stars {
    color: var(--color-star);
    font-size: 0.85rem;
}

.product-card__reviews {
    font-size: 0.8rem;
    color: var(--color-text-lighter);
    margin-left: 4px;
}

/* ========================================
   FEATURES
   ======================================== */
.features {
    padding: 80px 0;
}

.features__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.feature-card {
    text-align: center;
    padding: 32px 24px;
    border-radius: var(--radius-md);
    background: var(--color-bg-soft);
    transition: all var(--transition);
}

.feature-card:hover {
    background: #fff;
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.feature-card__icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 8px;
}

.feature-card__text {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ========================================
   TESTIMONIALS
   ======================================== */
.testimonials {
    padding: 80px 0;
    background: var(--color-bg-warm);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.testimonial-card {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.testimonial-card__stars {
    color: var(--color-star);
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.testimonial-card__text {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-card__author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-card__avatar {
    width: 44px;
    height: 44px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.testimonial-card__author strong {
    display: block;
    font-size: 0.95rem;
    color: var(--color-secondary);
}

.testimonial-card__author span {
    font-size: 0.8rem;
    color: var(--color-text-lighter);
}

/* ========================================
   BLOG PREVIEW
   ======================================== */
.blog-preview {
    padding: 80px 0;
}

.blog-preview__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.blog-preview__cta {
    text-align: center;
    margin-top: 40px;
}

.blog-card {
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.blog-card__image {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--color-primary-light), #FFE0D3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-card__placeholder {
    font-size: 3rem;
}

.blog-card__content {
    padding: 20px;
}

.blog-card__category {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.blog-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 8px 0;
    line-height: 1.4;
}

.blog-card__title a:hover {
    color: var(--color-primary);
}

.blog-card__excerpt {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 12px;
}

.blog-card__meta {
    font-size: 0.8rem;
    color: var(--color-text-lighter);
}

/* ========================================
   NEWSLETTER
   ======================================== */
.newsletter {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--color-secondary) 0%, #1a1f21 100%);
    color: #fff;
}

.newsletter__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 32px;
}

.newsletter__title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 12px;
}

.newsletter__text {
    font-size: 1.05rem;
    opacity: 0.85;
    max-width: 480px;
}

.newsletter__form {
    width: 100%;
    max-width: 500px;
}

.newsletter__input-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.newsletter__input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-full);
    background: rgba(255,255,255,0.08);
    color: #fff;
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: all var(--transition);
}

.newsletter__input::placeholder {
    color: rgba(255,255,255,0.5);
}

.newsletter__input:focus {
    border-color: var(--color-primary);
    background: rgba(255,255,255,0.12);
}

.newsletter__btn {
    width: 100%;
}

.newsletter__disclaimer {
    font-size: 0.8rem;
    opacity: 0.5;
    margin-top: 12px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: #111;
    color: #fff;
    padding: 60px 0 0;
}

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

.footer__logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    display: inline-block;
    margin-bottom: 12px;
}

.footer__tagline {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.6;
    margin-bottom: 20px;
    max-width: 300px;
}

.footer__social {
    display: flex;
    gap: 12px;
}

.footer__social-link {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    transition: all var(--transition);
}

.footer__social-link:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
}

.footer__heading {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    color: #fff;
}

.footer__links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer__links a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    transition: color var(--transition);
}

.footer__links a:hover {
    color: var(--color-primary);
}

.footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 24px 0;
    text-align: center;
}

.footer__bottom p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}

/* ========================================
   SCROLL ANIMATIONS
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========================================
   RESPONSIVE - TABLET (768px+)
   ======================================== */
@media (min-width: 768px) {
    .container {
        padding: 0 32px;
    }

    .hero {
        padding: 140px 0 80px;
    }

    .hero__container {
        flex-direction: row;
        align-items: center;
    }

    .hero__content {
        flex: 1;
    }

    .hero__image {
        flex: 1;
    }

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

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

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

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

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

    .newsletter__input-group {
        flex-direction: row;
    }

    .newsletter__btn {
        width: auto;
        flex-shrink: 0;
    }

    .footer__grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

/* ========================================
   RESPONSIVE - DESKTOP (1024px+)
   ======================================== */
@media (min-width: 1024px) {
    .nav__menu {
        display: flex;
    }

    .nav__cta {
        display: inline-flex;
    }

    .nav__toggle {
        display: none;
    }

    .hero {
        padding: 160px 0 100px;
    }

    .hero__title {
        font-size: 3.5rem;
    }

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

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

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

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

/* ========================================
   RESPONSIVE - LARGE DESKTOP (1280px+)
   ======================================== */
@media (min-width: 1280px) {
    .container {
        padding: 0 40px;
    }

    .hero__title {
        font-size: 4rem;
    }
}