/* ===================================
   MODERN CSS - Nature Tours
   Updated: 2025
   =================================== */

/* CSS Custom Properties (Variables) */
:root {
    /* Colors */
    --color-primary: #0FD84C;
    --color-secondary: #483895;
    --color-accent: #ff6b35;
    --color-accent-hover: #ff5722;
    --color-light: #fafafa;
    --color-dark: rgba(0, 0, 0, 0.8);
    --color-text: rgba(0, 0, 0, 0.7);
    --color-bg-light: #d7d4ed;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3.5rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-primary: 'Nunito', sans-serif;
    --font-heading: 'Aldrich', sans-serif;
    --font-size-sm: 1.4rem;
    --font-size-base: 1.6rem;
    --font-size-lg: 2rem;
    --font-size-xl: 4rem;

    /* Layout */
    --container-max-width: 120rem;
    --border-radius: 0.8rem;
    --border-radius-round: 50%;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

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

html {
    font-family: var(--font-primary);
    font-size: 62.5%; /* 1rem = 10px */
    scroll-behavior: smooth;
}

body {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

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

/* ===================================
   UTILITY CLASSES
   =================================== */

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

.section {
    padding: var(--spacing-md) 0;
}

/* ===================================
   HEADER & NAVIGATION
   =================================== */

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 7rem;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent);
    z-index: 1000;
    transition: background var(--transition-medium);
}

header.scrolled {
    background: rgba(72, 56, 149, 0.95);
    box-shadow: var(--shadow-md);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: var(--spacing-sm) 0;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.nav-brand img {
    height: 5rem;
    width: auto;
}

.nav-brand a {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    color: var(--color-light);
    font-weight: 700;
}

/* Mobile Menu Icon */
.menu-icons {
    display: block;
    cursor: pointer;
    z-index: 1600;
}

.menu-icons i {
    font-size: 3rem;
    color: var(--color-light);
    transition: transform var(--transition-fast);
}

.menu-icons:hover i {
    transform: scale(1.1);
}

.close i {
    color: var(--color-accent);
}

/* Navigation List (Mobile) */
.nav-list {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(80vw, 35rem);
    height: 100vh;
    background: linear-gradient(135deg, var(--color-bg-light) 0%, rgba(72, 56, 149, 0.1) 100%);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    transition: right var(--transition-slow);
    box-shadow: var(--shadow-lg);
}

.nav-list.active {
    right: 0;
}

.close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
}

.nav-item {
    opacity: 0;
    transform: translateX(50px);
    animation: slideIn 0.5s forwards;
}

.nav-list.active .nav-item {
    animation: slideIn 0.5s forwards;
}

.nav-list.active .nav-item:nth-child(2) { animation-delay: 0.1s; }
.nav-list.active .nav-item:nth-child(3) { animation-delay: 0.2s; }
.nav-list.active .nav-item:nth-child(4) { animation-delay: 0.3s; }
.nav-list.active .nav-item:nth-child(5) { animation-delay: 0.4s; }
.nav-list.active .nav-item:nth-child(6) { animation-delay: 0.5s; }

@keyframes slideIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.nav-link {
    font-size: 1.8rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.current {
    color: var(--color-accent);
    background: rgba(255, 107, 53, 0.1);
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(15, 216, 76, 0.85) 0%, rgba(72, 56, 149, 0.85) 100%),
                url("images/header-bg.jpg") center/cover no-repeat fixed;
    position: relative;
    padding: var(--spacing-lg) 0;
}

.hero::before {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 8rem;
    background: var(--color-light);
    clip-path: polygon(0 50%, 100% 0, 100% 100%, 0 100%);
}

.main-message {
    max-width: 60rem;
    color: var(--color-light);
    text-align: center;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main-message h3 {
    font-size: var(--font-size-base);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.3rem;
    margin-bottom: var(--spacing-sm);
}

.main-message h1 {
    font-family: var(--font-heading);
    font-size: clamp(3.5rem, 8vw, 6rem);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.main-message p {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    display: inline-block;
    padding: 1.4rem 3.5rem;
    background: var(--color-accent);
    color: var(--color-light);
    font-size: var(--font-size-base);
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 5rem;
    transition: all var(--transition-medium);
    box-shadow: var(--shadow-md);
    letter-spacing: 0.1rem;
}

.btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn:active {
    transform: translateY(-1px);
}

/* ===================================
   SECTIONS
   =================================== */

.experience-outdoors {
    padding: var(--spacing-lg) 0;
    background: var(--color-light);
}

.title-heading {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.title-heading h3 {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.2rem;
    color: var(--color-primary);
    font-weight: 600;
}

.title-heading h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    text-transform: uppercase;
    margin: var(--spacing-sm) 0;
    color: var(--color-dark);
}

.title-heading p {
    font-size: var(--font-size-base);
    color: var(--color-text);
    max-width: 60rem;
    margin: 0 auto;
}

/* ===================================
   ACTIVITIES GRID
   =================================== */

.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 30rem), 1fr));
    gap: var(--spacing-md);
}

.activities-grid-item {
    min-height: 45rem;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    color: var(--color-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: transform var(--transition-medium);
}

.activities-grid-item:hover {
    transform: translateY(-10px);
}

.activities-grid-item::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent 70%);
    transition: background var(--transition-medium);
    z-index: 1;
}

.activities-grid-item:hover::before {
    background: linear-gradient(135deg, rgba(15, 216, 76, 0.9) 0%, rgba(72, 56, 149, 0.9) 100%);
}

.activities-grid-item > * {
    position: relative;
    z-index: 2;
}

.hiking {
    background: url("images/hiking.jpg") center/cover no-repeat;
}

.star-gazing {
    background: url("images/stars.jpg") center/cover no-repeat;
}

.football {
    background: url("images/football.jpg") center/cover no-repeat;
}

.activities-grid-item i {
    font-size: 5rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.activities-grid-item h1 {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.activities-grid-item p {
    font-size: 1.5rem;
    line-height: 1.6;
}

/* ===================================
   TESTIMONIALS
   =================================== */

.testimonials {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(15, 216, 76, 0.85) 0%, rgba(72, 56, 149, 0.85) 100%),
                url("images/testimonials-bg.jpg") center/cover no-repeat fixed;
    position: relative;
    padding: var(--spacing-lg) 0;
}

.testimonials::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 8rem;
    background: var(--color-light);
    clip-path: polygon(0 0, 100% 0, 100% 50%, 0 100%);
}

.testimonial {
    max-width: 80rem;
    text-align: center;
    color: var(--color-light);
}

.testimonial-text-box {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.testimonial-text-box p {
    font-size: 2.4rem;
    font-style: italic;
    line-height: 1.8;
    position: relative;
    z-index: 2;
}

.testimonial-text-box i {
    position: absolute;
    top: -4rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10rem;
    color: var(--color-accent);
    opacity: 0.3;
    z-index: 1;
}

.testimonial-customer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.testimonial-customer img {
    width: 12rem;
    height: 12rem;
    border-radius: var(--border-radius-round);
    border: 4px solid var(--color-accent);
    object-fit: cover;
    box-shadow: var(--shadow-md);
}

.testimonial-customer h1 {
    font-size: 2rem;
    font-weight: 600;
}

/* ===================================
   ADVENTURE SECTION
   =================================== */

.begin-adventure {
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.adventure-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 35rem), 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.adventure-grid-item {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(15, 216, 76, 0.1), rgba(72, 56, 149, 0.1));
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-accent);
    transition: all var(--transition-medium);
}

.adventure-grid-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.adventure-grid-item p {
    font-size: 1.7rem;
    line-height: 1.8;
    color: var(--color-text);
}

/* ===================================
   PRICING CARDS
   =================================== */

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 30rem), 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.pricing-card {
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-medium);
    text-align: center;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-light);
    transform: scale(1.05);
}

.pricing-card h2 {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
}

.pricing-card .price {
    font-size: 4rem;
    font-weight: 700;
    margin: var(--spacing-md) 0;
}

.pricing-card .price span {
    font-size: 2rem;
    font-weight: 400;
}

.pricing-card ul {
    margin: var(--spacing-md) 0;
    text-align: left;
}

.pricing-card li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

/* ===================================
   CONTACT FORM
   =================================== */

.contact-form {
    max-width: 60rem;
    margin: var(--spacing-md) auto;
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1.2rem;
    border: 2px solid var(--color-bg-light);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 15rem;
}

.form-error {
    color: #e74c3c;
    font-size: 1.4rem;
    margin-top: var(--spacing-xs);
    display: none;
}

.form-error.active {
    display: block;
}

/* ===================================
   FOOTER
   =================================== */

footer {
    padding: var(--spacing-md) 0;
    background: var(--color-bg-light);
    text-align: center;
    color: var(--color-text);
}

footer p {
    font-size: var(--font-size-sm);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

/* Tablet and up */
@media screen and (min-width: 768px) {
    .menu-icons {
        display: none;
    }

    .nav-list {
        position: static;
        width: auto;
        height: auto;
        background: transparent;
        backdrop-filter: none;
        flex-direction: row;
        gap: var(--spacing-sm);
        box-shadow: none;
    }

    .nav-item {
        opacity: 1;
        transform: none;
        animation: none;
    }

    .close {
        display: none;
    }

    .nav-link {
        font-size: 1.4rem;
        color: var(--color-light);
        position: relative;
    }

    .nav-link::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 2px;
        background: var(--color-accent);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform var(--transition-medium);
    }

    .nav-link:hover::after,
    .nav-link.current::after {
        transform: scaleX(1);
    }

    .nav-link:hover,
    .nav-link.current {
        color: var(--color-light);
        background: transparent;
    }

    .hero {
        min-height: 90vh;
    }

    .main-message {
        text-align: left;
    }
}

/* Desktop */
@media screen and (min-width: 1024px) {
    .hero {
        min-height: 100vh;
    }

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

/* Large Desktop */
@media screen and (min-width: 1440px) {
    html {
        font-size: 65%;
    }
}