/**
 * KalviYogi Student Life OS - Landing Page Styles
 * Premium Black & Gold Theme
 */

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--space-8) var(--space-4);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at top, rgba(212, 175, 55, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at bottom, rgba(212, 175, 55, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(212, 175, 55, 0.15);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    margin-bottom: var(--space-6);
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
    margin-bottom: var(--space-4);
}

.hero-title .accent {
    color: var(--color-accent);
    font-style: italic;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-accent);
    margin-bottom: var(--space-4);
    max-width: 600px;
}

.hero-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    max-width: 550px;
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
    justify-content: center;
}

.hero-buttons .btn {
    min-width: 180px;
}

.hero-link {
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.hero-link:hover {
    color: var(--color-accent-light);
}

/* Stats Section */
.stats-section {
    padding: var(--space-8) var(--space-4);
    background: linear-gradient(180deg, rgba(212, 175, 55, 0.05) 0%, transparent 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-4);
    max-width: 800px;
    margin: 0 auto;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
}

.stat-item {
    text-align: center;
    padding: var(--space-4);
}

.stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-3);
    background: rgba(212, 175, 55, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.features-pills {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    margin-top: var(--space-6);
    flex-wrap: wrap;
}

.feature-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

/* Section Common */
.landing-section {
    padding: var(--space-10) var(--space-4);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-3);
}

.section-heading {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-6);
}

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

/* About Section */
.about-content p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-4);
}

.about-content strong {
    color: var(--color-accent);
}

.about-content em {
    color: var(--color-text-muted);
    font-style: italic;
}

/* Audience Section */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-5);
    margin-top: var(--space-6);
}

.audience-card {
    padding: var(--space-5);
}

.audience-icon {
    font-size: 40px;
    margin-bottom: var(--space-3);
}

.audience-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-2);
}

.audience-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Difference Section */
.difference-list {
    margin-top: var(--space-6);
}

.difference-item {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-5);
    margin-bottom: var(--space-4);
    border-left: 3px solid var(--color-accent);
    background: rgba(0, 0, 0, 0.2);
}

.difference-icon {
    width: 32px;
    height: 32px;
    background: rgba(231, 76, 60, 0.2);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #e74c3c;
    flex-shrink: 0;
}

.difference-content h3 {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-1);
    color: #e74c3c;
}

.difference-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.approach-box {
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-top: var(--space-6);
}

.approach-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-success);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-4);
}

.approach-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-3);
}

.approach-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
}

.approach-item::before {
    content: '→';
    color: var(--color-accent);
}

/* Reviews Section */
.reviews-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
    color: var(--color-text-secondary);
}

.reviews-stars {
    color: #f1c40f;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-5);
}

.review-card {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.review-stars {
    color: #f1c40f;
    margin-bottom: var(--space-3);
}

.review-text {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.review-author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.review-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
}

.review-info .name {
    font-weight: var(--font-weight-medium);
}

.review-info .role {
    font-size: var(--font-size-sm);
    color: var(--color-success);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

/* Pricing Section */
.pricing-subtitle {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
    max-width: 1000px;
    margin: 0 auto;
    margin-top: var(--space-4);
    align-items: stretch;
}

.pricing-card {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 480px;
}

.pricing-card.featured {
    border-color: var(--color-accent);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.2);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: var(--color-bg);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    white-space: nowrap;
}

.pricing-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-4);
}

.pricing-price {
    margin-bottom: var(--space-5);
}

.pricing-amount {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
}

.pricing-period {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.pricing-features {
    text-align: left;
    margin-bottom: var(--space-6);
    flex: 1;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-2) 0;
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.pricing-features .included::before {
    content: '✓';
    color: var(--color-success);
    flex-shrink: 0;
}

.pricing-features .excluded {
    color: var(--color-text-muted);
}

.pricing-features .excluded::before {
    content: '✕';
    color: var(--color-error);
    flex-shrink: 0;
}

/* Pricing card button at bottom */
.pricing-card .btn {
    margin-top: auto;
}

/* Trust Badges */
.trust-badges {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Footer */
.landing-footer {
    padding: var(--space-8) var(--space-4);
    text-align: center;
    background: rgba(0, 0, 0, 0.5);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-brand {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-2);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Footer Columns */
.footer-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-6);
    max-width: 600px;
    margin: var(--space-6) auto;
    text-align: left;
}

.footer-col h4 {
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col a {
    display: block;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    padding: var(--space-1) 0;
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--color-accent);
}

.footer-copyright {
    margin-top: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Trust Line */
.trust-line {
    margin-top: var(--space-6);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Search Box */
.search-box {
    max-width: 500px;
    margin: 0 auto var(--space-4);
}

.search-input {
    width: 100%;
    padding: var(--space-4);
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--radius-xl);
    color: var(--color-text);
    font-size: var(--font-size-base);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-accent);
}

/* Popular Tags */
.popular-tags {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    flex-wrap: wrap;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.tag-link {
    color: var(--color-accent);
    text-decoration: none;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.tag-link:hover {
    background: rgba(212, 175, 55, 0.1);
}

/* ========================================
   ENHANCED CARD STYLES
   ======================================== */

.audience-card,
.review-card {
    background: rgba(13, 13, 13, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Pricing card - needs overflow visible for badge */
.pricing-card {
    background: rgba(13, 13, 13, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    position: relative;
    overflow: visible;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Golden top highlight */
.audience-card::before,
.review-card::before,
.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0.5;
}

/* Hover lift with glow */
.audience-card:hover,
.review-card:hover,
.pricing-card:hover {
    transform: translateY(-8px);
    border-color: rgba(212, 175, 55, 0.4);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(212, 175, 55, 0.15);
}

/* Shine effect on hover */
.audience-card::after,
.review-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(to right,
            transparent 0%,
            rgba(255, 255, 255, 0.03) 50%,
            transparent 100%);
    transform: rotate(30deg) translateX(-100%);
    transition: transform 0.8s ease;
}

.audience-card:hover::after,
.review-card:hover::after {
    transform: rotate(30deg) translateX(100%);
}

/* Enhanced Pricing Card Featured */
.pricing-card.featured {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(13, 13, 13, 0.95) 100%);
    border-color: var(--color-accent);
    box-shadow: 0 0 50px rgba(212, 175, 55, 0.25);
}

.pricing-card.featured:hover {
    box-shadow:
        0 25px 50px rgba(0, 0, 0, 0.6),
        0 0 60px rgba(212, 175, 55, 0.3);
}

/* Enhanced Icons */
.audience-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-4);
    transition: all 0.3s ease;
}

.audience-card:hover .audience-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.3);
}

/* Review Stars Animation */
.review-stars {
    font-size: 1.2rem;
    letter-spacing: 2px;
}

.review-avatar {
    transition: transform 0.3s ease;
}

.review-card:hover .review-avatar {
    transform: scale(1.1);
}

/* ========================================
   MOBILE RESPONSIVE - 768px
   ======================================== */
@media (max-width: 768px) {

    /* Hero Section */
    .hero-section {
        padding: var(--space-6) var(--space-4);
        min-height: auto;
        padding-top: 80px;
        padding-bottom: var(--space-10);
    }

    .hero-badge {
        font-size: var(--font-size-xs);
        padding: var(--space-2) var(--space-3);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
        padding: 0 var(--space-2);
    }

    .hero-description {
        font-size: var(--font-size-sm);
        padding: 0 var(--space-2);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        width: 100%;
        padding: 0 var(--space-4);
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 320px;
        padding: var(--space-4) var(--space-5);
        font-size: var(--font-size-base);
    }

    .trust-line {
        font-size: var(--font-size-xs);
        line-height: 1.8;
    }

    /* Floating orbs smaller on mobile */
    .floating-orb {
        opacity: 0.15;
    }

    .orb-1 {
        width: 150px;
        height: 150px;
    }

    .orb-2 {
        width: 100px;
        height: 100px;
    }

    .orb-3 {
        width: 80px;
        height: 80px;
    }

    /* Hide rotating globe on mobile */
    .hero-globe {
        display: none;
    }

    /* Tamil Flow */
    .tamil-flow {
        gap: var(--space-2);
        margin-bottom: var(--space-4);
    }

    .tamil-word {
        font-size: clamp(1rem, 5vw, 1.5rem);
    }

    .tamil-arrow {
        font-size: 1rem;
    }

    /* Sections */
    .landing-section {
        padding: var(--space-8) var(--space-3);
    }

    .section-heading {
        font-size: var(--font-size-xl);
        text-align: center;
    }

    .section-content {
        padding: 0;
    }

    /* About */
    .about-content p {
        font-size: var(--font-size-base);
        text-align: center;
    }

    /* Audience Grid */
    .audience-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .audience-card {
        padding: var(--space-5);
        text-align: center;
    }

    .audience-icon {
        margin: 0 auto var(--space-4);
    }

    /* Difference Section */
    .difference-item {
        flex-direction: column;
        text-align: center;
        gap: var(--space-3);
        padding: var(--space-4);
    }

    .difference-icon {
        margin: 0 auto;
    }

    .approach-box {
        padding: var(--space-4);
    }

    .approach-list {
        grid-template-columns: 1fr;
        gap: var(--space-2);
    }

    /* Reviews */
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .review-card {
        padding: var(--space-5);
    }

    .review-text {
        font-size: var(--font-size-sm);
    }

    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: var(--space-5);
        max-width: 400px;
        margin: 0 auto;
    }

    .pricing-card {
        padding: var(--space-5);
        min-height: auto;
    }

    .pricing-amount {
        font-size: var(--font-size-2xl);
    }

    /* Trust Badges */
    .trust-badges {
        flex-direction: column;
        align-items: center;
        gap: var(--space-3);
    }

    .trust-badge {
        font-size: var(--font-size-xs);
    }

    /* Search Box */
    .search-box {
        max-width: 100%;
        padding: 0 var(--space-2);
    }

    .search-input {
        padding: var(--space-3);
        font-size: var(--font-size-sm);
    }

    /* Popular Tags */
    .popular-tags {
        gap: var(--space-1);
    }

    .tag-link {
        font-size: var(--font-size-xs);
        padding: var(--space-1);
    }

    /* Footer */
    .footer-columns {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: var(--space-3);
    }
}

/* ========================================
   MOBILE RESPONSIVE - 480px (Small phones)
   ======================================== */
@media (max-width: 480px) {
    .hero-section {
        padding: var(--space-4) var(--space-3);
        padding-top: 60px;
    }

    .hero-badge {
        font-size: 0.65rem;
        padding: var(--space-1) var(--space-2);
    }

    .hero-buttons .btn {
        padding: var(--space-3) var(--space-4);
        font-size: var(--font-size-sm);
    }

    .tamil-flow {
        flex-direction: column;
        gap: var(--space-1);
    }

    .tamil-arrow {
        transform: rotate(90deg);
    }

    .section-heading {
        font-size: var(--font-size-lg);
    }

    .audience-card,
    .review-card,
    .pricing-card {
        padding: var(--space-4);
    }

    .difference-item {
        padding: var(--space-3);
    }

    .pricing-badge {
        font-size: 0.6rem;
        padding: var(--space-1) var(--space-2);
    }

    .footer-columns {
        grid-template-columns: 1fr;
    }

    /* Module icons smaller */
    .module-icons span {
        font-size: 1.5rem;
    }
}

/* ========================================
   TABLET LANDSCAPE - 1024px
   ======================================== */
@media (max-width: 1024px) and (min-width: 769px) {
    .hero-section {
        padding: var(--space-8) var(--space-6);
    }

    .audience-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-4);
    }

    .section-content {
        max-width: 100%;
        padding: 0 var(--space-4);
    }
}

/* ========================================
   LARGE SCREEN ENHANCEMENTS - 1200px+
   ======================================== */
@media (min-width: 1200px) {
    .hero-section {
        min-height: 100vh;
    }

    .section-content {
        max-width: 1100px;
    }

    .audience-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .pricing-grid {
        gap: var(--space-6);
    }
}

/* ========================================
   TOUCH DEVICE OPTIMIZATIONS
   ======================================== */
@media (hover: none) and (pointer: coarse) {

    /* Disable hover effects on touch devices */
    .audience-card:hover,
    .review-card:hover,
    .pricing-card:hover {
        transform: none;
    }

    /* Ensure tap targets are large enough */
    .btn {
        min-height: 48px;
    }

    .tag-link {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }
}

/* ========================================
   LANDSCAPE PHONE
   ======================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .hero-section {
        min-height: auto;
        padding: var(--space-4);
    }

    .floating-orb {
        display: none;
    }

    .tamil-flow {
        margin-bottom: var(--space-3);
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {

    .hero-section::before,
    .hero-section::after,
    .floating-orb,
    .hero-globe {
        display: none;
    }

    .audience-card,
    .review-card,
    .pricing-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}