/* Learn With Tahira - Premium Academic Boutique CSS Design System */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;0,9..144,800;1,9..144,400&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Brand Palette Tokens */
    --color-bg: #FAF6F0;           /* Cream page background */
    --color-bg-alt: #F3EDE4;       /* Soft sand section bands */
    --color-text-main: #1F2A44;    /* Deep Navy for headings and primary CTAs */
    --color-accent: #D9A0A6;       /* Blush Rose for script accents, highlights */
    --color-gold: #C9A14A;         /* Gold accents for thin lines, borders */
    --color-surface: #FFFFFF;      /* Pure white for cards and floating containers */
    
    --color-text-muted: #626F8A;   /* Soft Navy-Grey for subtext */
    
    /* Typography */
    --font-heading: 'Fraunces', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Borders & Shadows */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --shadow-subtle: 0 4px 20px rgba(31, 42, 68, 0.04);
    --shadow-medium: 0 12px 30px rgba(31, 42, 68, 0.08);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --header-height: 80px;
    --container-width: 1140px;
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-main);
    font-weight: 600;
    line-height: 1.25;
}

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

/* Premium Heading Underline Rule */
.section-heading {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-gold);
    display: inline-block;
    color: var(--color-text-main);
}

/* Script Accent Elements */
.script-accent {
    font-family: var(--font-heading);
    font-style: italic;
    color: var(--color-accent);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    display: block;
    font-weight: 400;
}

/* Header & Navigation Styles */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(250, 246, 240, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(201, 161, 74, 0.2);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.header-container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--color-text-main);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.logo-dot {
    color: var(--color-gold);
}

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

.nav-link {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-text-main);
    letter-spacing: 0.03em;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--color-gold);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-gold);
    transition: var(--transition-fast);
}

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

/* Buttons and Actions */
.nav-cta, .btn-primary {
    background-color: var(--color-text-main);
    color: var(--color-bg);
    border: 1px solid var(--color-text-main);
    padding: 0.75rem 1.75rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.8rem;
    transition: var(--transition-smooth);
    display: inline-block;
    cursor: pointer;
}

.nav-cta:hover, .btn-primary:hover {
    background-color: transparent;
    color: var(--color-text-main);
    border-color: var(--color-text-main);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-main);
    border: 1px solid var(--color-text-main);
    padding: 0.75rem 1.75rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.8rem;
    transition: var(--transition-smooth);
    display: inline-block;
    cursor: pointer;
}

.btn-secondary:hover {
    background-color: var(--color-text-main);
    color: var(--color-bg);
    transform: translateY(-2px);
}

/* Card Grid Styles */
.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    width: 100%;
}

.card {
    background-color: var(--color-surface);
    border: 1px solid rgba(201, 161, 74, 0.15);
    border-radius: var(--border-radius-md);
    padding: 2.5rem;
    box-shadow: var(--shadow-subtle);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-accent);
    opacity: 0;
    transition: var(--transition-fast);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--color-gold);
}

.card:hover::before {
    opacity: 1;
}

.card-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-main);
}

.card-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* How It Works List */
.workflow-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    width: 100%;
    margin-top: 2rem;
}

.workflow-step {
    position: relative;
    padding: 2rem;
    background: var(--color-surface);
    border: 1px solid rgba(201, 161, 74, 0.15);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-subtle);
}

.workflow-num {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.6;
    line-height: 1;
    margin-bottom: 1rem;
}

.workflow-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text-main);
}

/* Sections Configuration */
.section-padding {
    padding: 6rem 2rem;
}

.section-container {
    max-width: var(--container-width);
    margin: 0 auto;
    width: 100%;
}

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

/* Hero Section */
.hero-wrapper {
    background-color: var(--color-bg);
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + 2rem);
    position: relative;
}

.hero-content {
    max-width: 720px;
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 800;
    color: var(--color-text-main);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

/* Floating WhatsApp CTA */
.whatsapp-cta {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.whatsapp-button {
    width: 60px;
    height: 60px;
    background-color: var(--color-accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 30px rgba(217, 160, 166, 0.4);
    transition: var(--transition-smooth);
    position: relative;
}

.whatsapp-button:hover {
    transform: translateY(-4px) scale(1.05);
    background-color: var(--color-text-main);
    box-shadow: 0 12px 40px rgba(31, 42, 68, 0.25);
}

.whatsapp-button svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}

.whatsapp-pulse {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 16px;
    height: 16px;
    background-color: var(--color-gold);
    border-radius: 50%;
    border: 2px solid var(--color-bg);
}

.whatsapp-pulse::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: var(--color-gold);
    border-radius: 50%;
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 0.8;
    }
    100% {
        transform: scale(2.4);
        opacity: 0;
    }
}

.whatsapp-tooltip {
    background: var(--color-surface);
    border: 1px solid rgba(201, 161, 74, 0.25);
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius-md);
    color: var(--color-text-main);
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: var(--shadow-medium);
    opacity: 0;
    transform: translateX(20px);
    transition: var(--transition-smooth);
    pointer-events: none;
    white-space: nowrap;
}

.whatsapp-cta:hover .whatsapp-tooltip {
    opacity: 1;
    transform: translateX(0);
}

/* Footer Styles */
.site-footer {
    margin-top: auto;
    background-color: var(--color-bg-alt);
    border-top: 1px solid rgba(201, 161, 74, 0.15);
    padding: 5rem 2rem 2rem 2rem;
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-tagline {
    color: var(--color-text-muted);
    font-size: 1rem;
    line-height: 1.6;
    max-width: 320px;
}

.footer-links-title {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    color: var(--color-text-main);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.footer-link:hover {
    color: var(--color-gold);
    transform: translateX(4px);
}

.footer-bottom {
    max-width: var(--container-width);
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(201, 161, 74, 0.15);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* Responsive Grid Adjustments */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }
    .main-nav {
        display: none; /* Add standard responsive trigger if required, or keep clean */
    }
    .footer-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .whatsapp-tooltip {
        display: none;
    }
}