/* StudyShorts Website Styles */
/* Brand Colors: #91bce1 (light blue), #000000 (black), #030779 (dark blue) */

:root {
    --primary-blue: #91bce1;
    --dark-blue: #030779;
    --black: #000000;
    --white: #ffffff;
    --gray-light: #f8f9fa;
    --gray-medium: #6c757d;
    --gray-dark: #343a40;
    
    --gradient-primary: linear-gradient(135deg, var(--dark-blue) 0%, #1a3a8a 100%);
    --gradient-light: linear-gradient(135deg, var(--primary-blue) 0%, #c5dff0 100%);
    
    --shadow-soft: 0 4px 20px rgba(3, 7, 121, 0.1);
    --shadow-medium: 0 8px 30px rgba(3, 7, 121, 0.15);
    --shadow-strong: 0 15px 50px rgba(3, 7, 121, 0.2);
    
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--black);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: 1rem;
}

.highlight {
    color: var(--dark-blue);
    position: relative;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition-medium);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(3, 7, 121, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(3, 7, 121, 0.4);
}

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

.btn-secondary:hover {
    background: var(--dark-blue);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-full {
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition-medium);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo img {
    height: 60px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    font-weight: 500;
    color: var(--gray-dark);
    position: relative;
    padding: 8px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: var(--transition-medium);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--dark-blue);
}

.nav-cta {
    padding: 12px 28px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-medium);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--dark-blue);
    border-radius: 2px;
    transition: var(--transition-medium);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    padding: 140px 40px 80px;
    background: linear-gradient(180deg, #f0f7fc 0%, var(--white) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(145, 188, 225, 0.3) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    max-width: 600px;
}

.hero-text h1 {
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-medium);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image img {
    max-width: 100%;
    max-height: 550px;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(3, 7, 121, 0.2));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* Value Props */
.value-props {
    max-width: 1400px;
    margin: 80px auto 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    position: relative;
    z-index: 1;
}

.value-prop {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-medium);
    border: 1px solid rgba(145, 188, 225, 0.3);
}

.value-prop:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-strong);
}

.value-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-icon img {
    max-width: 80px;
    max-height: 80px;
    object-fit: contain;
}

.value-prop h3 {
    color: var(--dark-blue);
    margin-bottom: 16px;
    font-size: 1.5rem;
}

.value-prop p {
    color: var(--gray-medium);
    font-size: 1rem;
    line-height: 1.7;
}

/* Product Section */
.product {
    padding: 120px 40px;
    background: var(--white);
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-header h2 {
    margin-bottom: 20px;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--gray-medium);
}

.product-features {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 100px;
}

.feature-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
}

.feature-card.reversed {
    direction: rtl;
}

.feature-card.reversed > * {
    direction: ltr;
}

.feature-number {
    position: absolute;
    top: -40px;
    left: 0;
    font-size: 8rem;
    font-weight: 800;
    color: rgba(145, 188, 225, 0.2);
    line-height: 1;
    z-index: 0;
}

.feature-card.reversed .feature-number {
    left: auto;
    right: 0;
}

.feature-image {
    position: relative;
    z-index: 1;
}

.feature-image img {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
}

.feature-content {
    position: relative;
    z-index: 1;
}

.feature-content h3 {
    color: var(--dark-blue);
    margin-bottom: 20px;
}

.feature-content p {
    font-size: 1.1rem;
    color: var(--gray-medium);
    margin-bottom: 30px;
    line-height: 1.8;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    color: var(--gray-dark);
}

.feature-list li::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--gradient-light);
    color: var(--dark-blue);
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.9rem;
}

.product-cta {
    max-width: 1400px;
    margin: 100px auto 0;
}

.cta-content {
    background: var(--gradient-primary);
    padding: 60px 80px;
    border-radius: var(--border-radius-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-content::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
}

.cta-content h3 {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.cta-content .btn-primary {
    background: var(--white);
    color: var(--dark-blue);
    position: relative;
    z-index: 1;
}

.cta-content .btn-primary:hover {
    background: var(--primary-blue);
    color: var(--dark-blue);
}

/* Our Story Section */
.our-story {
    padding: 120px 40px;
    background: linear-gradient(180deg, var(--gray-light) 0%, var(--white) 100%);
}

.story-content {
    max-width: 900px;
    margin: 0 auto 80px;
}

.story-text {
    text-align: center;
}

.story-lead {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--dark-blue);
    margin-bottom: 30px;
    line-height: 1.8;
}

.story-text p {
    font-size: 1.1rem;
    color: var(--gray-medium);
    line-height: 1.9;
}

.team {
    max-width: 1000px;
    margin: 0 auto;
}

.team-title {
    text-align: center;
    color: var(--dark-blue);
    margin-bottom: 50px;
    font-size: 1.8rem;
}

.team-members {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
    justify-items: center;
}

.team-member {
    text-align: center;
    max-width: 350px;
}

.member-image {
    position: relative;
    width: 250px;
    height: 250px;
    margin: 0 auto 24px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    border: 5px solid var(--primary-blue);
}

.member-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transition: var(--transition-slow);
}

.team-member:hover .member-image img {
    transform: scale(1.1);
}

.member-social {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 15px;
    background: linear-gradient(transparent, rgba(3, 7, 121, 0.9));
    display: flex;
    justify-content: center;
    gap: 15px;
    opacity: 0;
    transform: translateY(100%);
    transition: var(--transition-medium);
}

.team-member:hover .member-social {
    opacity: 1;
    transform: translateY(0);
}

.member-social a {
    color: var(--white);
    transition: var(--transition-fast);
}

.member-social a:hover {
    color: var(--primary-blue);
    transform: scale(1.2);
}

.team-member h4 {
    font-size: 1.5rem;
    color: var(--dark-blue);
    margin-bottom: 8px;
}

.member-role {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 12px;
}

.member-bio {
    color: var(--gray-medium);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Contact Section */
.contact {
    padding: 120px 40px;
    background: var(--white);
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info h2 {
    margin-bottom: 20px;
}

.contact-info > p {
    font-size: 1.1rem;
    color: var(--gray-medium);
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--gray-dark);
    font-weight: 500;
}

.contact-item svg {
    color: var(--dark-blue);
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-blue);
    border-radius: var(--border-radius-md);
    transition: var(--transition-medium);
    padding: 12px;
}

.social-link img,
.social-link svg {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.social-link svg {
    display: block;
}

.social-link:hover {
    background: var(--primary-blue);
    transform: translateY(-5px);
}

/* Contact Form */
.contact-form {
    background: var(--gray-light);
    padding: 50px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--gray-dark);
    margin-bottom: 10px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid transparent;
    border-radius: var(--border-radius-md);
    background: var(--white);
    font-family: inherit;
    font-size: 1rem;
    color: var(--gray-dark);
    transition: var(--transition-medium);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(145, 188, 225, 0.3);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-medium);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* Footer */
.footer {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 80px 40px 0;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 80px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-brand {
    max-width: 350px;
}

.footer-logo {
    height: 80px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 24px;
    position: relative;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 2px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: var(--primary-blue);
    padding-left: 8px;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    color: var(--white);
    transition: var(--transition-medium);
}

.footer-social a:hover {
    background: var(--primary-blue);
    color: var(--dark-blue);
    transform: translateY(-3px);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

/* Responsive Styles */
@media (max-width: 1200px) {
    .hero-content {
        gap: 40px;
    }
    
    .feature-card {
        gap: 60px;
    }
}

@media (max-width: 992px) {
    .nav-links,
    .nav-cta {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-links.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--white);
        padding: 30px 40px;
        box-shadow: var(--shadow-medium);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image img {
        max-height: 400px;
    }
    
    .value-props {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
    
    .feature-card,
    .feature-card.reversed {
        grid-template-columns: 1fr;
        gap: 40px;
        direction: ltr;
    }
    
    .feature-number {
        font-size: 5rem;
        top: -20px;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .team-members {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 120px 20px 60px;
    }
    
    .section-header {
        margin-bottom: 50px;
    }
    
    .product,
    .our-story,
    .contact {
        padding: 80px 20px;
    }
    
    .nav-container {
        padding: 15px 20px;
    }
    
    .logo img {
        height: 50px;
    }
    
    .cta-content {
        padding: 40px 30px;
    }
    
    .contact-form {
        padding: 30px 25px;
    }
    
    .footer {
        padding: 60px 20px 0;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .member-image {
        width: 200px;
        height: 200px;
    }
    
    .social-links {
        flex-wrap: wrap;
    }
}

/* Mobile Navigation Active States */
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Scroll Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Loading State */
.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Success/Error States for Form */
.form-success {
    background: #d4edda;
    color: #155724;
    padding: 16px 20px;
    border-radius: var(--border-radius-md);
    margin-bottom: 20px;
    text-align: center;
    font-weight: 500;
}

.form-error {
    background: #f8d7da;
    color: #721c24;
    padding: 16px 20px;
    border-radius: var(--border-radius-md);
    margin-bottom: 20px;
    text-align: center;
    font-weight: 500;
}

/* Waitlist Modal */
.waitlist-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.waitlist-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.waitlist-modal-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-strong);
    animation: slideUp 0.3s ease;
}

.waitlist-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 32px;
    font-weight: 300;
    color: var(--gray-medium);
    cursor: pointer;
    transition: var(--transition-fast);
    line-height: 1;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.waitlist-close:hover {
    color: var(--dark-blue);
    background: var(--gray-light);
}

.waitlist-header {
    text-align: center;
    margin-bottom: 30px;
}

.waitlist-header h2 {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--gray-dark);
}

.waitlist-header p {
    color: var(--gray-medium);
    font-size: 16px;
}

.waitlist-form {
    width: 100%;
}

.waitlist-form .form-group {
    margin-bottom: 24px;
}

.waitlist-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--gray-dark);
    font-size: 14px;
}

.waitlist-form input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: var(--border-radius-md);
    font-size: 16px;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition-fast);
    background: var(--white);
}

.waitlist-form input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(145, 188, 225, 0.1);
}

.waitlist-form input::placeholder {
    color: #b0b0b0;
}

.waitlist-message {
    margin-top: 20px;
    padding: 14px 18px;
    border-radius: var(--border-radius-md);
    text-align: center;
    font-weight: 500;
    display: none;
}

.waitlist-message.success {
    display: block;
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.waitlist-message.error {
    display: block;
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* Mobile Responsive for Modal */
@media (max-width: 768px) {
    .waitlist-modal-content {
        padding: 30px 24px;
        width: 95%;
    }
    
    .waitlist-header h2 {
        font-size: 26px;
    }
    
    .waitlist-close {
        top: 15px;
        right: 15px;
        font-size: 28px;
    }
}