/* 
   AI Study Buddy Marketing Website - Main Stylesheet
   Author: AI Study Buddy Team
   Version: 1.0
*/

/* ======= BETA NOTIFICATION ======= */
#beta-notification {
    background-color: #ff9800;
    color: white;
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10000;
    display: block !important; /* Đảm bảo hiển thị mặc định và không bị ghi đè */
    width: 100%;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    font-weight: 500;
    animation: betaPulse 2s infinite alternate;
}

@keyframes betaPulse {
    from {
        background-color: #ff9800;
    }
    to {
        background-color: #e65100;
    }
}

#beta-notification .container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 15px;
}

#beta-notification .beta-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

#beta-notification .beta-message {
    display: flex;
    align-items: center;
    margin-right: 20px;
    flex: 1;
}

#beta-notification .beta-message i {
    font-size: 18px;
    margin-right: 10px;
}

#beta-notification .beta-message a {
    color: white;
    font-weight: 700;
    text-decoration: underline;
}

#beta-notification .beta-timer {
    display: flex;
    align-items: center;
    font-weight: 500;
}

#beta-notification #countdown {
    display: flex;
    margin-left: 10px;
}

#beta-notification .countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 5px;
    min-width: 40px;
}

#beta-notification .countdown-item span:first-child {
    font-weight: 700;
    font-size: 18px;
    font-family: var(--font-primary);
}

#beta-notification .countdown-label {
    font-size: 12px;
    opacity: 0.8;
}

#beta-notification #close-beta-notification {
    background: transparent;
    border: none;
    color: white;
    font-size: 16px;
    cursor: pointer;
    padding: 5px;
    margin-left: 10px;
}

@media (max-width: 768px) {
    #beta-notification .beta-content {
        flex-direction: column;
        text-align: center;
    }
    
    #beta-notification .beta-message {
        margin-bottom: 10px;
        justify-content: center;
        margin-right: 0;
    }
    
    #beta-notification .beta-timer {
        margin-bottom: 10px;
        justify-content: center;
    }
    
    #beta-notification #close-beta-notification {
        position: absolute;
        top: 5px;
        right: 5px;
    }
}

/* ======= RESET & BASE STYLES ======= */
:root {
    --primary-color: #1C74D1;
    --secondary-color: #0B2B5B;
    --accent-color: #4cc9f0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-color: #6c757d;
    --light-gray: #e9ecef;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --background-color: #FFEAC6;
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #fff;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

h1 {
    font-size: 3.2rem;
}

h2 {
    font-size: 2.4rem;
}

h3 {
    font-size: 1.8rem;
}

h4 {
    font-size: 1.4rem;
}

p {
    margin-bottom: 1rem;
}

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

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.section-header h2 {
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 15px;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
}

.section-header p {
    color: var(--gray-color);
    font-size: 1.1rem;
}

/* ======= BUTTONS ======= */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 50px; /* Rounded buttons like in app */
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(to right, #1C74D1, #4361ee);
    color: #fff;
    box-shadow: 0 5px 15px rgba(28, 116, 209, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(to right, #0B2B5B, #1C74D1);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(11, 43, 91, 0.4);
    color: #fff;
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

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

.btn.btn-sm { padding: 6px 12px; font-size: 0.85rem; border-width: 1px; }
.header-app-downloads { display:flex; align-items:center; gap:10px; margin-left: 16px; }
@media (max-width: 960px){ .header-app-downloads{ display:none; } }
.header-app-downloads .download-countdown { color: var(--dark-color); background: rgba(28,116,209,0.08); border-color: rgba(28,116,209,0.2); }

/* ======= HEADER & NAVIGATION ======= */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #fff;
    box-shadow: var(--box-shadow);
    z-index: 1000;
    transition: var(--transition);
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--secondary-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

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

.nav-links li {
    margin: 0 15px;
}

.nav-links a {
    color: var(--dark-color);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
}

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

.auth-buttons {
    display: flex;
    gap: 15px;
}

.auth-buttons .btn {
    padding: 8px 16px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--dark-color);
    transition: var(--transition);
}

/* ======= HERO SECTION ======= */
#hero {
    padding: 180px 0 100px;
    background: linear-gradient(135deg, #FFEAC6 0%, #FFD699 100%);
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(28, 116, 209, 0.1) 0%, rgba(28, 116, 209, 0) 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

#hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(11, 43, 91, 0.1) 0%, rgba(11, 43, 91, 0) 70%);
    border-radius: 50%;
    transform: translate(-30%, 30%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    margin-bottom: 20px;
    font-size: 3.5rem;
    color: var(--secondary-color);
    background: linear-gradient(to right, var(--secondary-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--gray-color);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: perspective(1000px) rotateY(-5deg) translateY(0px);
    }
    50% {
        transform: perspective(1000px) rotateY(-2deg) translateY(-15px);
    }
    100% {
        transform: perspective(1000px) rotateY(-5deg) translateY(0px);
    }
}

.hero-image:hover img {
    transform: perspective(1000px) rotateY(0) translateY(-10px);
}

/* ======= FEATURES SECTION ======= */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border: 1px solid rgba(28, 116, 209, 0.1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(28, 116, 209, 0.2);
    border: 1px solid rgba(28, 116, 209, 0.3);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(67, 97, 238, 0.1) 0%, rgba(28, 116, 209, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, #1C74D1 0%, #4361ee 100%);
    color: #fff;
    transform: scale(1.1);
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.feature-card p {
    color: var(--gray-color);
}

/* ======= HOW IT WORKS SECTION ======= */
#how-it-works {
    background-color: #f5f9ff;
    position: relative;
    overflow: hidden;
}

#how-it-works::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(28, 116, 209, 0.05) 0%, rgba(28, 116, 209, 0) 70%);
    border-radius: 50%;
}

.steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
    flex-wrap: wrap;
    gap: 30px;
}

.step {
    position: relative;
    flex: 1;
    min-width: 250px;
    text-align: center;
    padding: 30px;
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border: 1px solid rgba(28, 116, 209, 0.1);
}

.step:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(28, 116, 209, 0.2);
    border: 1px solid rgba(28, 116, 209, 0.3);
}

.step-number {
    position: absolute;
    top: -15px;
    left: -15px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #1C74D1 0%, #4361ee 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 1.2rem;
    z-index: 1;
    box-shadow: 0 5px 15px rgba(28, 116, 209, 0.3);
}

.step-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(67, 97, 238, 0.1) 0%, rgba(28, 116, 209, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary-color);
    font-size: 1.8rem;
    transition: var(--transition);
}

.step:hover .step-icon {
    background: linear-gradient(135deg, #1C74D1 0%, #4361ee 100%);
    color: #fff;
    transform: scale(1.1);
}

.step h3 {
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.step p {
    color: var(--gray-color);
}

.cta-container {
    text-align: center;
}

/* ======= TESTIMONIALS SECTION ======= */
.testimonials-slider {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.testimonial-card {
    background-color: #fff;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    max-width: 350px;
    flex: 1;
    border: 1px solid rgba(28, 116, 209, 0.1);
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(28, 116, 209, 0.2);
    border: 1px solid rgba(28, 116, 209, 0.3);
}

.testimonial-content {
    margin-bottom: 20px;
    position: relative;
    padding-top: 30px;
}

.testimonial-content::before {
    content: '\f10d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 2rem;
    color: rgba(67, 97, 238, 0.1);
    position: absolute;
    top: -10px;
    left: -10px;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 15px;
}

.testimonial-author h4 {
    margin: 0;
}

.testimonial-author p {
    margin: 0;
    color: var(--gray-color);
    font-size: 0.9rem;
}

/* ======= PRICING SECTION ======= */
.pricing-cards {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

.pricing-card {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
    padding: 40px;
    flex: 1;
    min-width: 300px;
    max-width: 350px;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.pricing-card.popular {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    z-index: 1;
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    right: 30px;
    background-color: var(--primary-color);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 0.9rem;
}

.pricing-header {
    margin-bottom: 30px;
}

.pricing-header h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-primary);
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--gray-color);
}

.pricing-features {
    margin-bottom: 30px;
    text-align: left;
}

.pricing-features ul {
    padding: 0;
}

.pricing-features li {
    padding: 10px 0;
    display: flex;
    align-items: center;
}

.pricing-features li i {
    margin-right: 10px;
    font-size: 1rem;
}

.pricing-features .fa-check {
    color: var(--success-color);
}

.pricing-features .fa-times {
    color: var(--danger-color);
}

.pricing-card .btn {
    width: 100%;
}

/* ======= FAQ SECTION ======= */
#faq {
    background-color: var(--light-color);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: #fff;
    border-radius: 10px;
    margin-bottom: 20px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.faq-question {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question h4 {
    margin: 0;
    font-size: 1.1rem;
    flex-grow: 1;
}

.faq-question i {
    color: var(--gray-color);
    transition: var(--transition);
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding-bottom: 20px;
    margin: 0;
}

.faq-item.active .faq-question {
    background-color: rgba(67, 97, 238, 0.05);
}

.faq-item.active .faq-question h4 {
    color: var(--primary-color);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--primary-color);
}

.faq-item.active .faq-answer {
    max-height: 1000px;
}

/* ======= CTA SECTION ======= */
#cta {
    background: linear-gradient(135deg, #0B2B5B 0%, #1C74D1 100%);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

#cta::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

#cta::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
    border-radius: 50%;
    transform: translate(-30%, 30%);
}

#cta h2 {
    color: #fff;
}

#cta p {
    color: rgba(255, 255, 255, 0.8);
    max-width: 700px;
    margin: 0 auto 30px;
    font-size: 1.1rem;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

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

#cta .btn-primary:hover {
    background-color: var(--light-color);
}

#cta .btn-secondary {
    border-color: #fff;
    color: #fff;
}

#cta .btn-secondary:hover {
    background-color: #fff;
    color: var(--primary-color);
}

.app-download.disabled { opacity: 0.6; pointer-events: auto; cursor: not-allowed; }
.download-countdown { display: inline-block; margin-left: 10px; font-size: 0.85rem; color: rgba(255,255,255,0.85); background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); padding: 4px 8px; border-radius: 999px; vertical-align: middle; }
#cta .download-countdown { color: #0B2B5B; background: rgba(28,116,209,0.08); border-color: rgba(28,116,209,0.2); }

/* ======= FOOTER ======= */
#footer {
    background-color: var(--dark-color);
    color: #fff;
    padding: 80px 0 30px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-logo {
    flex: 1;
    min-width: 250px;
}

.footer-logo img {
    height: 50px;
    margin-bottom: 15px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-column {
    min-width: 150px;
}

.footer-column h4 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    font-size: 0.9rem;
}

.footer-column ul li a:hover {
    color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: #fff;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ======= CONTACT MODAL ======= */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0s linear 0.3s, opacity 0.3s;
}

.modal.open {
    visibility: visible;
    opacity: 1;
    transition-delay: 0s;
}

.modal-content {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transform: scale(0.8);
    transition: transform 0.3s;
}

.modal.open .modal-content {
    transform: scale(1);
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.5rem;
    color: var(--gray-color);
    cursor: pointer;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--danger-color);
}

.modal h3 {
    margin-bottom: 30px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--light-gray);
    border-radius: 5px;
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group textarea {
    resize: vertical;
}

/* ======= BACK TO TOP BUTTON ======= */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    color: #fff;
    transform: translateY(-5px);
}

/* ======= TRIAL BANNER (Pricing) ======= */
.trial-banner {
    background: linear-gradient(90deg, #1C74D1, #4361ee);
    color: #fff;
    padding: 14px 24px;
    border-radius: 12px;
    font-family: var(--font-primary);
    font-weight: 600;
    text-align: center;
    margin: -10px 0 40px;
    box-shadow: 0 8px 20px rgba(28,116,209,0.25);
    position: relative;
    overflow: hidden;
}
.trial-banner:before, .trial-banner:after {
    content: '';
    position: absolute;
    top: 0; bottom:0;
    width: 120px;
    background: rgba(255,255,255,0.12);
    transform: skewX(-25deg);
    animation: trialShine 6s linear infinite;
}
.trial-banner:before { left: -150px; }
.trial-banner:after { left: -320px; animation-delay: 3s; }
@keyframes trialShine { 0% { left:-150px; } 100% { left:110%; } }
.pricing-note {
    margin-top: 35px;
    font-size: 0.9rem;
    color: var(--gray-color);
    text-align: center;
    max-width: 780px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 500;
}
.pricing-note strong { color: var(--primary-color); }
@media (max-width: 640px){
    .trial-banner { font-size: 0.9rem; padding: 12px 16px; }
}

/* ======= MINI FEATURE STRIP ======= */
.mini-feature-strip {
    margin-top: 50px;
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
}
.mini-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 1px solid rgba(28,116,209,0.15);
    padding: 10px 18px;
    border-radius: 40px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-primary);
    color: var(--secondary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.04);
    transition: var(--transition);
}
.mini-feature i { color: var(--primary-color); }
.mini-feature:hover { transform: translateY(-4px); box-shadow: 0 6px 18px rgba(28,116,209,0.18); }

/* ======= CERTIFICATES & REPORTS ======= */
#certificates-reports { background: linear-gradient(135deg,#f5f9ff 0%, #eef6ff 100%); }
.reports-grid { display:grid; gap:30px; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); }
.report-card { background:#fff; padding:28px; border-radius:18px; border:1px solid rgba(28,116,209,0.12); box-shadow:0 8px 22px rgba(0,0,0,0.05); transition:var(--transition); position:relative; overflow:hidden; }
.report-card:before { content:""; position:absolute; inset:0; background:linear-gradient(140deg,rgba(28,116,209,0.05),rgba(67,97,238,0.05)); opacity:0; transition:var(--transition); }
.report-card:hover { transform:translateY(-8px); box-shadow:0 14px 32px rgba(28,116,209,0.18); }
.report-card:hover:before { opacity:1; }
.report-icon { font-size:2rem; color: var(--primary-color); margin-bottom:14px; }
.report-card h3 { margin-bottom:12px; font-size:1.2rem; }
.report-card p { color:var(--gray-color); font-size:0.95rem; }

/* ======= APP DOWNLOAD STRIP ======= */
#app-download-strip { padding: 22px 0; background: #f5f9ff; border-top: 1px solid rgba(28,116,209,0.12); border-bottom: 1px solid rgba(28,116,209,0.12); }
.app-download-strip-inner { display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
#app-download-strip .btn { padding: 10px 16px; }
#app-download-strip .download-countdown { color:#0B2B5B; background: rgba(28,116,209,0.08); border-color: rgba(28,116,209,0.2); }

/* ======= RESPONSIVE STYLES ======= */
@media (max-width: 992px) {
    h1 {
        font-size: 2.8rem;
    }

    h2 {
        font-size: 2rem;
    }
    
    section {
        padding: 60px 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text {
        margin-bottom: 30px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step {
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    #header {
        padding: 10px 0;
    }
    
    .nav-links,
    .auth-buttons {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-open .mobile-menu-btn span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .mobile-menu-open .mobile-menu-btn span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-open .mobile-menu-btn span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .mobile-menu-open .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: #fff;
        padding: 30px;
        z-index: 1000;
    }
    
    .mobile-menu-open .nav-links li {
        margin: 15px 0;
    }
    
    .mobile-menu-open .auth-buttons {
        display: flex;
        flex-direction: column;
        position: fixed;
        bottom: 30px;
        left: 0;
        width: 100%;
        padding: 0 30px;
        z-index: 1000;
    }
    
    .pricing-card.popular {
        transform: scale(1);
        margin: 20px 0;
    }
    
    .pricing-card.popular:hover {
        transform: translateY(-10px);
    }
    
    .back-to-top {
        bottom: 15px;
        right: 15px;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 576px) {
    h1 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .testimonial-card {
        padding: 20px;
    }
    
    .pricing-card {
        padding: 30px;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
        margin-bottom: 15px;
    }
}

.hidden { display: none !important; }