/* ============================================================
   RYAN ALIMENTO — PERSONAL SITE
   Design System: "The Notebook"
   ============================================================ */

/* ==================== CSS CUSTOM PROPERTIES ==================== */
:root {
    /* Colors */
    --color-bg:          #FAF8F5;
    --color-bg-alt:      #F3F0EB;
    --color-text:        #2D2D2D;
    --color-text-muted:  #6B6B6B;
    --color-text-light:  #999999;
    --color-accent:      #3A5A7C;
    --color-accent-hover:#2C4760;
    --color-warm:        #C46D4E;
    --color-warm-hover:  #A85A3F;
    --color-border:      #E0DCD6;
    --color-card-bg:     #FFFFFF;
    --color-navbar-bg:   rgba(250, 248, 245, 0.92);

    /* Typography */
    --font-heading:  'Lora', Georgia, 'Times New Roman', serif;
    --font-body:     'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:     'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Spacing */
    --space-xs:   0.5rem;
    --space-sm:   1rem;
    --space-md:   1.5rem;
    --space-lg:   2.5rem;
    --space-xl:   4rem;
    --space-2xl:  6rem;
    --space-3xl:  8rem;

    /* Layout */
    --max-width:  900px;
    --nav-height: 64px;

    /* Transitions */
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

::selection {
    background-color: var(--color-accent);
    color: #fff;
}

/* ==================== NAVBAR ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background-color: var(--color-navbar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
}

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

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.nav-logo:hover {
    color: var(--color-accent);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: var(--space-lg);
}

.nav-links a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--color-text-muted);
    letter-spacing: 0.02em;
    text-transform: lowercase;
    position: relative;
    padding-bottom: 2px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background-color: var(--color-warm);
    transition: width var(--transition);
}

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

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

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==================== HERO ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-height) + var(--space-xl)) var(--space-md) var(--space-xl);
}

.hero-container {
    max-width: var(--max-width);
    width: 100%;
}

.hero-name {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-text);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.hero-tagline {
    font-family: var(--font-mono);
    font-size: clamp(0.85rem, 1.5vw, 1rem);
    font-weight: 400;
    color: var(--color-warm);
    letter-spacing: 0.04em;
    margin-bottom: var(--space-lg);
}

.hero-description {
    font-family: var(--font-body);
    font-size: clamp(1.05rem, 1.8vw, 1.2rem);
    font-weight: 300;
    line-height: 1.8;
    color: var(--color-text-muted);
    max-width: 600px;
    margin-bottom: var(--space-xl);
}

.hero-cta {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-accent);
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--color-border);
    transition: color var(--transition), border-color var(--transition);
}

.hero-cta:hover {
    color: var(--color-warm);
    border-bottom-color: var(--color-warm);
}

/* ==================== SECTIONS (SHARED) ==================== */
.section {
    padding: var(--space-3xl) var(--space-md);
}

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

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.01em;
}

.section-title::after {
    content: '';
    display: block;
    width: 40px;
    height: 2.5px;
    background-color: var(--color-warm);
    margin-top: var(--space-xs);
    border-radius: 2px;
}

.section-subtitle {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--color-text-light);
    margin-top: var(--space-sm);
    margin-bottom: var(--space-xl);
    letter-spacing: 0.01em;
}

/* ==================== ABOUT ==================== */
.about {
    background-color: var(--color-bg);
}

.about-content {
    max-width: 680px;
}

.about-text p {
    margin-bottom: var(--space-md);
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text);
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-text a {
    color: var(--color-accent);
    border-bottom: 1px solid var(--color-border);
    transition: color var(--transition), border-color var(--transition);
}

.about-text a:hover {
    color: var(--color-warm);
    border-bottom-color: var(--color-warm);
}

/* ==================== WRITING & WORK ==================== */
.writing {
    background-color: var(--color-bg-alt);
}

.writing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.writing-card {
    display: flex;
    flex-direction: column;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: var(--space-lg);
    text-decoration: none;
    color: var(--color-text);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.writing-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
    border-color: var(--color-accent);
    color: var(--color-text);
}

.writing-card-source {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--color-warm);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-xs);
}

.writing-card-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.writing-card-excerpt {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    flex-grow: 1;
    margin-bottom: var(--space-sm);
}

.writing-card-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-light);
}

/* ==================== MUSINGS ==================== */
.musings {
    background-color: var(--color-bg);
}

.musings-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.musing-entry {
    display: block;
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border);
    text-decoration: none;
    color: var(--color-text);
    transition: background-color var(--transition);
}

.musing-entry:first-child {
    border-top: 1px solid var(--color-border);
}

.musing-entry:hover {
    background-color: var(--color-bg-alt);
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
    margin-left: calc(-1 * var(--space-sm));
    margin-right: calc(-1 * var(--space-sm));
    border-radius: 4px;
}

.musing-entry:hover .musing-title {
    color: var(--color-accent);
}

.musing-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: 0.4rem;
}

.musing-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.musing-tag {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--color-warm);
    background-color: rgba(196, 109, 78, 0.08);
    padding: 0.15rem 0.55rem;
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.musing-tag--wip {
    color: var(--color-text-light);
    background-color: transparent;
    border: 1px dashed var(--color-text-light);
}

.musing-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text);
    margin-bottom: 0.35rem;
    transition: color var(--transition);
}

.musing-preview {
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--color-text-muted);
    max-width: 620px;
}

/* ==================== FOOTER ==================== */
.footer {
    background-color: var(--color-text);
    color: var(--color-bg);
    padding: var(--space-3xl) var(--space-md);
    text-align: center;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.footer-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-bg);
}

.footer-text {
    font-size: 1rem;
    color: rgba(250, 248, 245, 0.7);
    max-width: 480px;
    margin: 0 auto var(--space-lg);
    line-height: 1.7;
}

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

.footer-link {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-bg);
    letter-spacing: 0.02em;
    padding-bottom: 2px;
    border-bottom: 1px solid rgba(250, 248, 245, 0.3);
    transition: border-color var(--transition), color var(--transition);
}

.footer-link:hover {
    color: var(--color-warm);
    border-bottom-color: var(--color-warm);
}

.footer-copyright {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: rgba(250, 248, 245, 0.35);
    letter-spacing: 0.02em;
}

/* ==================== RESPONSIVE ==================== */

/* Tablet */
@media (max-width: 768px) {
    :root {
        --space-3xl: 5rem;
    }

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

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background-color: var(--color-navbar-bg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        flex-direction: column;
        padding: var(--space-md);
        gap: 0;
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    }

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

    .nav-links li a {
        display: block;
        padding: var(--space-sm) 0;
        font-size: 0.9rem;
    }

    .nav-toggle {
        display: flex;
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --space-3xl: 3.5rem;
        --space-xl: 2.5rem;
        --space-lg: 1.8rem;
    }

    .hero {
        min-height: 90vh;
    }

    .hero-name {
        font-size: 2.4rem;
    }

    .musing-entry:hover {
        padding-left: 0;
        padding-right: 0;
        margin-left: 0;
        margin-right: 0;
    }

    .writing-card {
        padding: var(--space-md);
    }

    .footer {
        padding: var(--space-xl) var(--space-md);
    }
}

/* ==================== SUBTLE DETAILS ==================== */

/* Fade-in animation for sections */
.section,
.footer {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.visible,
.footer.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth focus styles for accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 2px;
}

/* Subtle texture on hero (optional notebook feel) */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(0, 0, 0, 0.015) 1px, transparent 0);
    background-size: 32px 32px;
    pointer-events: none;
}

.hero {
    position: relative;
}