/*
* File: style.css
* Description: Styles for the Gold Trading in Bolivia website.
* Design System: Futuristic, Asymmetric Balance
* Color Scheme: Split-Complementary
* Animation Style: Particle Animation & Scroll-based transitions
*/

/* ===== CSS Variables ===== */
:root {
    /* Color Palette (Split-Complementary) */
    --primary-color: #FFD700; /* Gold */
    --primary-color-dark: #d4b100;
    --secondary-color: #00FFF0; /* Cyan/Teal */
    --accent-color: #B400FF; /* Purple */

    /* Background & Text Colors */
    --dark-bg: #111317;
    --dark-bg-secondary: #1a1c22;
    --light-bg: #f9f9f9;
    --dark-text: #222222;
    --light-text: #EAEAEA;
    --light-text-secondary: #b0b0b0;

    /* Typography */
    --font-headings: 'Manrope', sans-serif;
    --font-body: 'Rubik', sans-serif;

    /* Spacing & Borders */
    --section-padding: 6rem 0;
    --border-radius: 8px;
    --transition-speed: 0.3s ease;
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--light-bg);
    color: var(--dark-text);
    line-height: 1.7;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headings);
    font-weight: 800;
    line-height: 1.3;
    color: var(--dark-text);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }

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

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

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

ul {
    list-style: none;
}

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

/* ===== Layout & Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.main-container {
    width: 100%;
}

.section {
    padding: var(--section-padding);
    overflow: hidden;
}

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

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark p,
.section-dark li {
    color: var(--light-text);
    text-shadow: none;
}

.section-dark p {
    color: var(--light-text-secondary);
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section-dark .section-title {
    color: var(--light-text);
}

/* ===== Header & Navigation ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: background-color var(--transition-speed), padding var(--transition-speed);
}

.header.scrolled {
    background-color: rgba(17, 19, 23, 0.9);
    padding: 1rem 0;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-headings);
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
}

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

.nav-list {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    color: var(--light-text);
    font-weight: 500;
    font-family: var(--font-body);
    position: relative;
    padding-bottom: 0.5rem;
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-link-button {
    border: 2px solid var(--primary-color);
    padding: 0.5rem 1.5rem;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.nav-link-button:hover {
    background-color: var(--primary-color);
    color: var(--dark-bg);
}

.nav-link-button::after {
    display: none;
}

.burger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.burger-menu span {
    display: block;
    width: 28px;
    height: 3px;
    background-color: #fff;
    margin: 5px 0;
    transition: all var(--transition-speed);
}

/* ===== Hero Section ===== */
.hero-section {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed; /* Parallax effect */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, rgba(17, 19, 23, 0.8) 0%, rgba(17, 19, 23, 0.4) 100%);
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title, .hero-subtitle {
    color: #FFFFFF !important;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 1.5rem auto 2.5rem;
    line-height: 1.8;
}

/* ===== Global Button Styles ===== */
.cta-button, .cta-button-outline {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-family: var(--font-headings);
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--border-radius);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition-speed);
    cursor: pointer;
    border: 2px solid var(--primary-color);
}

.cta-button {
    background-color: var(--primary-color);
    color: var(--dark-bg);
}

.cta-button:hover {
    background-color: var(--primary-color-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 215, 0, 0.2);
}

.cta-button-outline {
    background-color: transparent;
    color: var(--primary-color);
}

.cta-button-outline:hover {
    background-color: var(--primary-color);
    color: var(--dark-bg);
    transform: translateY(-3px);
}

.section-dark .cta-button-outline {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.section-dark .cta-button-outline:hover {
    background-color: var(--primary-color);
    color: var(--dark-bg);
}

/* ===== Asymmetric Layout ===== */
.asymmetric-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: center;
}

.asymmetric-layout .image-block {
    text-align: center;
}

.asymmetric-layout img {
    border-radius: var(--border-radius);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    object-fit: cover;
}

/* ===== History Section (Timeline) ===== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 4px;
    background-color: var(--primary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
    box-shadow: 0 0 15px var(--primary-color);
}

.timeline-item {
    padding: 1rem 3rem;
    position: relative;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: var(--dark-bg);
    border: 4px solid var(--secondary-color);
    top: 25px;
    border-radius: 50%;
    z-index: 1;
}

.timeline-item:nth-child(even)::after {
    left: -10px;
}

.timeline-content {
    padding: 1.5rem 2rem;
    background: var(--dark-bg-secondary);
    position: relative;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.timeline-item:nth-child(odd) .timeline-content {
    text-align: right;
}

/* ===== Cards (Instructors, Pricing, Stories) ===== */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.card {
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    overflow: hidden;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    display: flex;
    flex-direction: column;
    text-align: center;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12);
}

.section-dark .card {
    background-color: var(--dark-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.card .card-image {
    width: 100%;
    height: 250px; /* Fixed height for consistency */
    overflow: hidden;
}

.card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-speed);
}

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

.card .card-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.instructor-card .card-image {
    height: 300px;
}
.instructor-name {
    margin-bottom: 0.25rem;
    color: var(--dark-text);
}
.instructor-title {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 1rem;
}

/* Pricing Section */
.toggle-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3rem;
    color: var(--light-text);
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--dark-bg-secondary);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: var(--primary-color);
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--secondary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.pricing-card {
    padding-top: 2rem;
    position: relative;
}

.pricing-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.1);
}

.featured-badge {
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--dark-bg);
    padding: 0.5rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 700;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.price {
    font-size: 3rem;
    font-family: var(--font-headings);
    color: var(--light-text);
    margin-bottom: 1rem;
}

.price .period {
    font-size: 1rem;
    color: var(--light-text-secondary);
    font-family: var(--font-body);
}

.pricing-card ul {
    margin: 1.5rem 0;
    text-align: left;
    flex-grow: 1;
    padding-left: 20%;
}

.pricing-card ul li {
    margin-bottom: 0.75rem;
    position: relative;
    padding-left: 1.5rem;
}

.pricing-card ul li::before {
    content: '✓';
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

/* Success Stories */
.story-card .card-content {
    text-align: left;
}
.story-card blockquote {
    font-style: italic;
    margin-bottom: 1rem;
    border-left: 3px solid var(--primary-color);
    padding-left: 1.5rem;
}
.story-card cite {
    font-weight: 700;
    display: block;
    text-align: right;
    color: var(--dark-text);
}

/* ===== External Resources Section ===== */
.resource-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.resource-link {
    background: var(--dark-bg-secondary);
    padding: 2rem;
    border-radius: var(--border-radius);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.resource-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 20px var(--secondary-color);
    border-color: var(--secondary-color);
}

.resource-link h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* ===== Contact Form ===== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-form .form-group {
    position: relative;
    margin-bottom: 2rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem 0 0.5rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid #ccc;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--dark-text);
    outline: none;
    transition: border-color var(--transition-speed);
}

.contact-form textarea {
    resize: vertical;
}

.contact-form label {
    position: absolute;
    top: 1rem;
    left: 0;
    font-size: 1rem;
    color: #999;
    pointer-events: none;
    transition: all var(--transition-speed);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-bottom-color: var(--primary-color);
}

.contact-form input:focus + label,
.contact-form textarea:focus + label,
.contact-form input:valid + label,
.contact-form textarea:valid + label {
    top: -1rem;
    font-size: 0.8rem;
    color: var(--primary-color);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--dark-bg);
    color: var(--light-text-secondary);
    padding: 5rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    padding-bottom: 4rem;
}

.footer h4 {
    color: var(--light-text);
    font-family: var(--font-headings);
    margin-bottom: 1.5rem;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    color: var(--light-text-secondary);
    transition: color var(--transition-speed);
}

.footer-col a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.9rem;
}

/* ===== Animation on Scroll ===== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Special Page Styles ===== */
/* success.html */
.success-page {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    min-height: 100vh;
    background-color: var(--dark-bg);
}
.success-content {
    color: var(--light-text);
}
.success-content h1 {
    color: var(--light-text);
    font-size: 3rem;
    margin-bottom: 1rem;
}
.success-content p {
    color: var(--light-text-secondary);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}
.success-content .cta-button {
    background: var(--primary-color);
    color: var(--dark-bg);
}

/* terms.html & privacy.html */
.static-page-content {
    padding-top: 120px;
    padding-bottom: 60px;
}
.static-page-content .container h1 {
    margin-bottom: 2rem;
}
.static-page-content .container h2 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}
.static-page-content .container p,
.static-page-content .container li {
    color: #555;
}

/* ===== Media Queries for Responsiveness ===== */
@media (max-width: 992px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }

    .asymmetric-layout {
        grid-template-columns: 1fr;
    }
    .asymmetric-layout .image-block {
        order: -1; /* Image appears first */
    }
    .contact-container {
        grid-template-columns: 1fr;
    }
    .timeline::after {
        left: 31px;
    }
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        left: 0;
    }
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        text-align: left;
    }
    .timeline-item::after {
        left: 21px;
    }
}

@media (max-width: 768px) {
    .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--dark-bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right 0.5s ease-in-out;
    }
    .nav-list.active {
        right: 0;
    }
    .nav-link {
        font-size: 1.5rem;
    }
    .burger-menu {
        display: block;
    }
    .burger-menu.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .burger-menu.active span:nth-child(2) {
        opacity: 0;
    }
    .burger-menu.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .hero-subtitle {
        font-size: 1.1rem;
    }
    .section {
        padding: 4rem 0;
    }
}