/* ================================================================
   NatalieMed — Global Styles
   Single cohesive stylesheet for all pages.
   ================================================================ */

/* === Design Tokens === */
:root {
    /* Palette — warm navy + soft sage, elegant and approachable */
    --color-primary: #4a6e78;
    --color-primary-dark: #2e4a52;
    --color-primary-light: #eef4f5;
    --color-accent: #c9a87c;
    --color-accent-light: #f7f0e6;
    --color-text: #2d3436;
    --color-text-secondary: #636e72;
    --color-bg: #f9fafb;
    --color-white: #ffffff;
    --color-border: #e2e8f0;
    --color-error: #c0392b;

    /* Typography */
    --font-heading: 'Georgia', 'Times New Roman', serif;
    --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;

    /* Layout */
    --max-width: 800px;
    --nav-height: 60px;
    --radius: 12px;
    --radius-sm: 6px;
    --shadow-soft: 0 2px 20px rgba(0, 0, 0, 0.06);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.08);
    --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

main {
    flex: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 1.5rem;
    width: 100%;
}

main.main-wide {
    max-width: 1200px;
}

/* === Typography === */
h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--color-primary-dark);
    line-height: 1.3;
}

h1 { font-size: 2.2rem; font-weight: 700; margin-bottom: 0.5rem; }
h2 { font-size: 1.4rem; font-weight: 600; margin-bottom: 0.75rem; letter-spacing: 0.02em; }
h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.25rem; }

p { margin-bottom: 0.75rem; }
p:last-child { margin-bottom: 0; }

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

.subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    font-style: italic;
    margin-bottom: 0.25rem;
}

.affiliation {
    font-size: 0.95rem;
    color: var(--color-accent);
    font-weight: 500;
    letter-spacing: 0.01em;
}

/* === Navigation === */
.nav {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: 0.01em;
}
.nav-brand:hover { color: var(--color-primary); }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--color-primary-dark);
    padding: 0.25rem;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding: 0.25rem 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-accent);
}

/* === Profile Hero (full-width background image) === */
.profile-hero {
    position: relative;
    background: url('media/background.jpg') center / cover no-repeat;
    padding: 4rem 1.5rem;
    display: flex;
    justify-content: center;
}

.profile-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(46, 74, 82, 0.7),
        rgba(46, 74, 82, 0.85)
    );
}

.profile-hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: var(--max-width);
}

.profile-hero h1 { color: var(--color-white); }
.profile-hero .subtitle { color: rgba(255, 255, 255, 0.85); }
.profile-hero .affiliation { color: var(--color-accent); }

.profile-photo-card {
    width: 220px;
    height: 280px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    margin-bottom: 1.5rem;
    background: var(--color-border);
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-intro h1 { margin-bottom: 0.25rem; }

/* === Divider === */
.divider {
    width: 60px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
    margin: 0 auto 2.5rem;
}

/* === Content Sections === */
.content-section {
    margin-bottom: 2.5rem;
}

.content-section p {
    color: var(--color-text-secondary);
    font-size: 1.02rem;
}

.education-item {
    background: var(--color-white);
    border-radius: var(--radius-sm);
    padding: 1.25rem 1.5rem;
    border-left: 3px solid var(--color-accent);
    box-shadow: var(--shadow-soft);
}

.education-item p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* === Cards === */
.contact-card {
    background: var(--color-white);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    margin-top: 1.5rem;
    border-left: 3px solid var(--color-accent);
    box-shadow: var(--shadow-soft);
}

.contact-card h3 {
    color: var(--color-primary-dark);
    margin-bottom: 0.25rem;
}

.contact-card a {
    font-size: 1.05rem;
}

/* === Forms === */
.inline-form {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.contact-form {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

.success-message {
    color: var(--color-primary);
    font-size: 0.95rem;
    font-weight: 500;
}

.input {
    padding: 0.65rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    flex: 1;
    min-width: 200px;
    transition: border-color var(--transition);
    background: var(--color-white);
}

.input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 110, 120, 0.1);
}

.btn {
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    padding: 0.65rem 1.75rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    letter-spacing: 0.02em;
    transition: background var(--transition);
}

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

.error-message {
    width: 100%;
    color: var(--color-error);
    font-size: 0.9rem;
}

/* === Calendar Embed === */
.calendar-embed { margin-top: 1rem; overflow: hidden; }
.calendar-embed iframe { border-radius: var(--radius-sm); width: 100%; margin-bottom: -75px; }

/* === Calendar + Roadmap Layout === */
.calendar-layout {
    display: flex;
    gap: 2.5rem;
    margin-top: 1rem;
}

.calendar-left {
    flex: 1;
    min-width: 0;
}

.calendar-right {
    flex: 0 0 300px;
    display: flex;
    flex-direction: column;
    max-height: 525px;
}

.roadmap-title {
    text-align: center;
    margin-bottom: 1.25rem;
    flex-shrink: 0;
}

/* === Roadmap Timeline === */
.roadmap {
    position: relative;
    padding-left: 28px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.roadmap::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--color-border);
}

.roadmap-item {
    position: relative;
    margin-bottom: 1.5rem;
}

.roadmap-item:last-child {
    margin-bottom: 0;
}

.roadmap-marker {
    position: absolute;
    left: -28px;
    top: 4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    background: var(--color-white);
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.roadmap-item.completed .roadmap-marker {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.roadmap-item.completed .roadmap-marker::after {
    content: '✓';
    color: var(--color-white);
    font-size: 0.7rem;
    font-weight: 700;
}

.roadmap-item.current .roadmap-marker {
    background: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px var(--color-accent-light);
}

.roadmap-item.current .roadmap-marker::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-white);
}

.roadmap-item.upcoming .roadmap-marker {
    border-color: var(--color-border);
    background: var(--color-bg);
}

.roadmap-content {
    background: var(--color-white);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    box-shadow: var(--shadow-soft);
}

.roadmap-item.current .roadmap-content {
    border-left: 3px solid var(--color-accent);
}

.roadmap-item.roadmap-event .roadmap-content {
    background: var(--color-accent-light);
}

.roadmap-item.roadmap-milestone .roadmap-marker {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.roadmap-item.roadmap-milestone .roadmap-content {
    background: var(--color-accent-light);
    border-left: 3px solid var(--color-accent);
}

.roadmap-item.roadmap-milestone .roadmap-content h3 {
    color: var(--color-primary-dark);
}

.roadmap-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-secondary);
    margin-bottom: 0.15rem;
}

.roadmap-content h3 {
    font-size: 0.95rem;
    margin-bottom: 0.15rem;
}

.roadmap-content p {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.4;
}

/* Nested overlay for overlapping periods (e.g. Step 1 within M2) */
.roadmap-inset {
    margin-top: 0.75rem;
    padding: 0.65rem 0.85rem;
    background: var(--color-accent-light);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-sm);
    position: relative;
}

.roadmap-inset .roadmap-label {
    font-size: 0.65rem;
}

.roadmap-inset h3 {
    font-size: 0.85rem;
    margin-bottom: 0.1rem;
}

.roadmap-inset p {
    font-size: 0.78rem;
}

/* === Subscribe === */
.subscribe-section {
    margin-top: 0;
}

.subscribe-card {
    background: var(--color-primary-light);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
}

.subscribe-card h2 {
    margin-bottom: 0.35rem;
}

.subscribe-card > p {
    color: var(--color-text-secondary);
    margin-bottom: 1.25rem;
}

.subscribe-form {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 500px;
    margin: 0 auto;
}

.subscribe-form .input {
    flex: 1;
    min-width: 180px;
}

/* === Footer === */
.footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    padding: 1.25rem;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
}

/* === Responsive === */
@media (max-width: 640px) {
    .nav { padding: 0 1.25rem; }
    .nav-toggle { display: block; }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-soft);
        padding: 1rem 1.5rem;
        gap: 0.75rem;
    }

    .nav-links.open { display: flex; }

    main { padding: 2rem 1.25rem; }

    h1 { font-size: 1.8rem; }

    .profile-photo-card {
        width: 180px;
        height: 230px;
    }

    .calendar-layout {
        flex-direction: column;
    }

    .calendar-right {
        flex: 1;
    }
}