/* =================================================================== */
/* FIND V - MASTER STYLESHEET (FINAL - GỘP CHO CẢ 2 TRANG)          */
/* =================================================================== */

/* --- Biến màu và Font chữ --- */
:root {
    /* Màu sắc chung */
    --primary-background: #edf1f7;
    --secondary-background: #f0f2f5; 
    --dark-background: #3b3f4c;
    --border-color-light: #E0E0E0;

    /* Màu chữ */
    --text-color-dark: #333333;
    --text-color-light: #FFFFFF;
    --text-color-medium: #666666;
    --text-color-medium-on-dark: #d1d5db; 

    /* Màu nhấn */
    --accent-color: #bf1414; 
    --accent-color-dark: #d5d6db;
    
    /* Box Shadows */
    --box-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --box-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --box-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 6px 18px rgba(0, 0, 0, 0.12);

    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 20px;

    /* Spacing */
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    /* Font Families */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

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

body, html {
    margin: 0; padding: 0;
    font-family: var(--font-body);
    background-color: var(--secondary-background);
    color: var(--text-color-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: var(--accent-color); transition: color 0.2s ease; }
a:hover { color: var(--accent-color-dark); }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { font-family: var(--font-heading); color: var(--text-color-dark); }

/* --- Các thành phần dùng chung cho LANDING PAGE --- */
.container {
    max-width: 1100px; width: 100%; margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-md); text-align: center;
}
.cta-button {
    display: inline-block; background-color: var(--accent-color); color: var(--primary-background);
    padding: 15px 30px; border-radius: var(--border-radius-xl); text-decoration: none;
    font-size: 1.1em; font-weight: 500;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--box-shadow-md); border: none; cursor: pointer;
}
.cta-button:hover { background-color: var(--accent-color-dark); transform: translateY(-3px); box-shadow: var(--box-shadow-hover); }

/* =================================================================== */
/* == STYLES FOR VCARD PAGE (id_card.html)                          == */
/* =================================================================== */
.business-card {
    display: flex; width: 100%; max-width: 1000px; min-height: 600px;
    margin: 5vh auto; border-radius: 24px; box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    overflow: hidden; background-color: var(--dark-background);
}
.card-left {
    flex: 0 0 40%; background-color: var(--dark-background); color: var(--text-color-light);
    padding: 48px 32px; display: flex; flex-direction: column; align-items: center; text-align: center;
}
.profile-avatar {
    width: 300px; height: 300px; border-radius: 25px; border: 3px solid rgba(255, 255, 255, 0.5);
    overflow: hidden; margin-bottom: 24px; flex-shrink: 0;
}
.profile-avatar img { width: 100%; height: 100%; object-fit: cover; }
.identity-info .greeting { font-size: 1rem; color: var(--text-color-medium-on-dark); margin: 0; }
.identity-info .name { font-family: var(--font-heading); font-size: 2.2rem; line-height: 1.2; margin: 8px 0; color: #FFFFFF; }
.identity-info .title { font-size: 1.1rem; color: var(--text-color-medium-on-dark); text-transform: uppercase; letter-spacing: 1px; margin: 0; }
.id-section { margin-top: auto; padding-top: 32px; width: 100%; }
.card-right {
    flex: 1; background-color: var(--secondary-background); padding: 48px;
    display: flex; flex-direction: column;
}
.company-banner { padding: 12px 24px; margin-bottom: 32px; text-align: center; border-bottom: 1px solid var(--border-color-light); }
.company-name { font-family: var(--font-heading); font-size: 1.8rem; margin: 0; color: #444; }
.bio-section { margin-bottom: 32px; border-bottom: 1px solid var(--border-color-light); padding-bottom: 32px; }
.bio-text { font-size: 1rem; color: #555; line-height: 1.7; margin: 0 0 12px 0; }
.bio-text:last-child { margin-bottom: 0; }
.contact-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 16px; }
.contact-item a {
    display: flex; align-items: center; padding: 12px 16px; background-color: #fff;
    border: 1px solid var(--border-color-light); border-radius: 8px; color: var(--text-color-dark);
    font-weight: 500; font-size: 1rem; text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.contact-item a:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); border-color: var(--accent-color); }
.contact-item a span { font-family: var(--font-heading); margin-right: 12px; color: var(--accent-color); font-weight: 700; }
.social-link a { background-color: #fdfdfd; }
.special-link a { background-color: var(--accent-color); color: var(--text-color-light); border-color: var(--accent-color); }
.special-link a span { color: var(--text-color-light); }
.special-link a:hover { background-color: var(--accent-color-dark); }
.qr-code-button {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background-color: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px; padding: 10px 20px; color: var(--text-color-light);
    font-weight: 500; cursor: pointer; transition: background-color 0.2s ease;
}
.qr-code-button:hover { background-color: rgba(255, 255, 255, 0.2); }
.qr-code-button svg { width: 20px; height: 20px; fill: currentColor; }
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(5px);
    display: none; justify-content: center; align-items: center; z-index: 1000;
    opacity: 0; transition: opacity .3s ease;
}
.modal-overlay.show { display: flex; opacity: 1; }
.modal-content {
    background: white; padding: 30px 40px; border-radius: 12px;
    text-align: center; position: relative; width: 90%; max-width: 340px;
    transform: translateY(-30px); transition: transform .3s ease;
}
.modal-overlay.show .modal-content { transform: translateY(0); }
.close-modal-btn { position: absolute; top: 10px; right: 15px; font-size: 28px; font-weight: bold; color: #aaa; cursor: pointer; }
.modal-content h3 { margin-top: 0; color: #333; }
#qrcode-container { margin: 20px auto; width: 240px; height: 240px; }
.modal-content p { margin-top:15px; color:#666; font-size:14px; }
.modal-input { width: 100%; padding: 12px; margin-bottom: 15px; border: 1px solid #ccc; border-radius: 5px; font-size: 16px; }
.modal-button { width: 100%; padding: 12px; background-color: var(--accent-color); color: white; border: none; border-radius: 5px; font-size: 16px; cursor: pointer; }

/* =================================================================== */
/* == STYLES FOR LANDING PAGE (id_index.html)                       == */
/* =================================================================== */
#hero { padding: var(--spacing-xxl) 0; background-color: var(--primary-background); text-align: center; }
#hero .container { padding-top: 0; padding-bottom: 0; }
.hero-card-image img {
    max-width: 350px; width: 80%; margin: 0 auto var(--spacing-xl) auto;
    filter: drop-shadow(0 10px 15px rgba(0,0,0,0.1));
}
#hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); margin-bottom: var(--spacing-md); }
#hero p { font-size: clamp(1rem, 2.5vw, 1.2rem); max-width: 600px; margin: 0 auto var(--spacing-xl) auto; color: var(--text-color-medium); }

#features { background-color: var(--secondary-background); padding: var(--spacing-xxl) 0; text-align: center; }
#features h2 { font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: var(--spacing-xxl); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--spacing-lg); }
.feature-card {
    background: var(--primary-background); border: 1px solid var(--border-color-light); padding: var(--spacing-xl);
    border-radius: var(--border-radius-md); text-align: left; box-shadow: var(--box-shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--box-shadow-md); }
.feature-card img { width: 60px; height: 60px; margin-bottom: var(--spacing-md); }
.feature-card h3 { font-size: 1.5rem; margin-bottom: var(--spacing-sm); }
.feature-card p { font-size: 1rem; color: var(--text-color-medium); }

#pricing { background-color: var(--primary-background); padding: var(--spacing-xxl) 0; text-align: center; }
#pricing h2 { font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: var(--spacing-xl); }
#pricing img { max-width: 800px; width: 90%; border-radius: var(--border-radius-lg); box-shadow: var(--box-shadow-md); margin: 0 auto; }

#auth { background-color: var(--secondary-background); padding: var(--spacing-xxl) 0; text-align: center; }
#auth h2 { font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: var(--spacing-xl); }
.auth-card {
    max-width: 450px; margin: 0 auto; background: var(--primary-background);
    border: 1px solid var(--border-color-light); padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl); box-shadow: var(--box-shadow-lg); text-align: left;
}
.auth-tabs { display: flex; background-color: var(--secondary-background); border-radius: var(--border-radius-md); margin-bottom: var(--spacing-lg); overflow: hidden; }
.tab-link {
    flex: 1; padding: var(--spacing-md); background: none; border: none;
    color: var(--text-color-medium); font-family: var(--font-heading);
    font-size: 1.1rem; font-weight: 700; cursor: pointer; transition: background-color 0.3s ease, color 0.3s ease;
}
.tab-link.active { background-color: var(--accent-color); color: var(--primary-background); box-shadow: var(--box-shadow-sm); }
.tab-content { display: none; }
.tab-content.active { display: block; }
.form-group { text-align: left; margin-bottom: var(--spacing-md); }
.form-group label { display: block; margin-bottom: var(--spacing-sm); font-weight: 500; }
.form-group input {
    width: 100%; padding: 10px; background: var(--secondary-background);
    border: 1px solid var(--border-color-light); border-radius: var(--border-radius-sm); font-size: 1rem;
}
.form-group input:focus { outline: none; border-color: var(--accent-color); box-shadow: 0 0 0 2px rgba(106, 90, 205, 0.3); }
.auth-button {
    width: 100%; padding: 12px; margin-top: var(--spacing-md); background-color: var(--accent-color);
    color: var(--primary-background); border: none; border-radius: var(--border-radius-md);
    font-size: 1.1rem; font-weight: 700; cursor: pointer; transition: background-color 0.2s ease;
}
.auth-button:hover { background-color: var(--accent-color-dark); }
.auth-footer { margin-top: var(--spacing-lg); font-size: 0.9rem; color: var(--text-color-medium); }


/* =================================================================== */
/* == RESPONSIVE STYLES (GỘP CHO CẢ 2 TRANG)                        == */
/* =================================================================== */
@media (max-width: 900px) {
    /* --- vCard Responsive --- */
    .business-card {
        flex-direction: column; margin: 0; min-height: 100vh; border-radius: 0;
    }
    .card-left, .card-right { padding: 40px 24px; }
    .identity-info .name { font-size: 2rem; }
    .id-section { margin-top: 32px; }

    /* --- Landing Page Responsive --- */
    .container { padding: var(--spacing-xl) var(--spacing-md); }
    #hero h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
    #hero p { font-size: clamp(0.9rem, 2vw, 1rem); }
    .hero-card-image img { max-width: 300px; }
    #features h2, #pricing h2, #auth h2 { font-size: clamp(1.8rem, 4vw, 2.2rem); }
}

@media (max-width: 480px) {
    /* --- vCard Responsive --- */
    .card-left { padding: 32px 20px; }
    .card-right { padding: 32px 20px; }
    .profile-avatar { width: 300px; height: 300px; }
    .identity-info .name { font-size: 1.8rem; }
    .identity-info .title { font-size: 1rem; }
    .company-name { font-size: 1.5rem; }
    .bio-text { font-size: 0.95rem; }
    .contact-item a { padding: 10px 12px; font-size: 0.9rem; }

    /* --- Landing Page Responsive --- */
    .container { padding: var(--spacing-lg) var(--spacing-sm); }
    #hero h1 { font-size: clamp(1.8rem, 4vw, 2.2rem); }
    .hero-card-image img { max-width: 250px; }
    .cta-button { padding: 12px 25px; font-size: 0.95em; }
    .features-grid { grid-template-columns: 1fr; }

    /* --- Header --- */
    .brand-name { font-size: 2.5rem; }
    .tagline { font-size: 1rem; }
    .nearby-search-container h2 { font-size: 1.5rem; }
    .header-container { padding: 0 15px; }
    .header-logo img { height: 35px; }
    .login-button { padding: 8px 16px; font-size: 0.6rem; }
    .header-actions .lang-switcher { border-left: none; padding-left: 0; }
}
/* ====================================================== */
/* == CSS DÙNG CHUNG CHO HEADER & FOOTER == */
/* ====================================================== */

/* --- BIẾN MÀU & FONT CHỮ (Bắt buộc) --- */
:root {
    --brand-color-findv: #bf1414;
    --tagline-color: #6A6A6A;
    --search-button-bg: #BF1414;
    --search-button-text-color: #FFFFFF;
    --search-button-hover-bg: #404040;
    --text-dark: #333333;
    --soft-gray-background: #edf1f7;
    --box-background-light: #FFFFFF;
    --border-color-light: #e0e0e0;
}

/* --- Thiết lập cơ bản cho Body để Footer hoạt động đúng --- */
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    font-family: 'Inter', sans-serif;
}
main {
    flex: 1 0 auto;
}

/* --- HEADER --- */
.site-header {
    background-color: var(--soft-gray-background);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header-logo img {
    height: 40px;
    width: auto;
    display: block;
}
.header-nav {
    flex-grow: 1;
    display: flex;
    justify-content: center;
}
.header-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 30px;
}
.header-nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    padding-bottom: 5px;
}
.header-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--brand-color-findv);
    transition: width 0.3s ease;
}
.header-nav a:hover::after {
    width: 100%;
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}
.login-button {
    background-color: var(--brand-color-findv);
    color: #fff;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s ease;
}
.login-button:hover {
    background-color: var(--search-button-hover-bg);
    color: #fff;
}
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 5px;
    border-left: 1px solid var(--border-color-light);
    padding-left: 20px;
}
.lang-switcher button {
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}
.lang-switcher button:hover {
    opacity: 1;
}
.lang-switcher button.active {
    opacity: 1;
    color: var(--brand-color-findv);
}
.lang-switcher span {
    color: var(--border-color-light);
}

/* --- FOOTER --- */
.site-footer {
    background-color: #212529;
    color: #adb5bd;
    padding: 60px 0 0 0;
    margin-top: auto;
}
.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.footer-about, .footer-links, .footer-social {
    flex: 1;
    min-width: 250px;
}
.footer-logo {
    height: 45px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}
.footer-about p {
    line-height: 1.8;
}
.footer-links h4, .footer-social h4 {
    color: #fff;
    font-family: 'Space Grotesk', sans-serif;
    margin-bottom: 20px;
    font-size: 1.2rem;
}
.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li {
    margin-bottom: 12px;
}
.footer-links a {
    text-decoration: none;
    color: #adb5bd;
    transition: color 0.3s ease;
}
.footer-links a:hover {
    color: #fff;
}
.social-icons {
    display: flex;
    gap: 15px;
}
.social-icons a {
    color: #adb5bd;
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid #495057;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
}
.social-icons a:hover {
    color: #fff;
    background-color: var(--brand-color-findv);
    border-color: var(--brand-color-findv);
}
.footer-bottom {
    border-top: 1px solid #343a40;
    margin-top: 40px;
    padding: 20px 0;
    text-align: center;
}
.footer-bottom p {
    margin: 0;
    font-size: 0.9rem;
}

/* --- RESPONSIVE --- */
@media (max-width: 850px) {
    .header-nav { display: none; }
    .footer-container { flex-direction: column; text-align: center; }
    .footer-social .social-icons { justify-content: center; }
}

@media (max-width: 480px) {
    .header-container { padding: 0 15px; }
    .header-logo img { height: 35px; }
    .login-button { padding: 8px 16px; font-size: 0.6rem; }
}