/*
Theme Name: SAGABridge Landing
Theme URI: https://sagabridge.live
Author: Ing. David-Adrian Babtan
Author URI: https://www.linkedin.com/in/david-adrian-b-b22aa5205/
Description: Custom landing page for SAGABridge — Invoice Digitalization and Integration with SAGA. Editorial single-page theme that links to the live application at app.sagabridge.live. Built as a master's dissertation companion site at UPB FAIMA, Management of Digital Enterprises programme.
Version: 1.0
License: Academic use
Tags: landing-page, single-page, custom-design, academic
*/

/* =====================================================
   SAGABridge Landing — editorial / academic register
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Geist:wght@400;500;600;700&family=Geist+Mono:wght@400;500&display=swap');

:root {
    --ink:        #1B1714;
    --ink-soft:   #4D4538;
    --ink-quiet:  #807766;
    --ink-faint:  #B5AB99;
    --paper:      #FAF7F0;
    --paper-deep: #F2EDE0;
    --paper-warm: #EFE9D7;
    --rule:       #DDD6C2;
    --rule-soft:  #E8E2D2;
    --surface:    #FFFFFF;
    --accent:     #7A1820;
    --accent-soft:#9E2A33;
    --accent-wash:#F4E8E5;
    --ok:         #2C5F3B;
    --ok-wash:    #E5EDE2;
}

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

html, body {
    background: var(--paper);
    color: var(--ink);
    font-family: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 150ms ease, color 150ms ease;
}
a:hover {
    color: var(--accent-soft);
    border-bottom-color: currentColor;
}

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

/* ---------- Layout ---------- */
.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ---------- Academic header bar ---------- */
.academic-bar {
    border-bottom: 1px solid var(--rule);
    padding: 1.2rem 0;
    background: var(--paper-deep);
    color: var(--ink-quiet);
}
.academic-bar .container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1.5rem;
}
.academic-bar .crest {
    display: flex;
    align-items: center;
    justify-content: center;
}
.academic-bar .crest img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    display: block;
}
.academic-bar .acad-text {
    text-align: center;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 500;
    line-height: 1.5;
}
.academic-bar .acad-text strong {
    color: var(--ink-soft);
    letter-spacing: 0.12em;
    display: block;
    margin-bottom: 0.2rem;
}
.academic-bar .acad-text .programme {
    color: var(--ink-quiet);
    font-family: 'Fraunces', serif;
    font-style: italic;
    text-transform: none;
    letter-spacing: 0;
    font-size: 0.82rem;
    font-weight: 400;
    margin-top: 0.25rem;
}

/* ---------- Hero ---------- */
.hero {
    padding: 5rem 0 4rem;
    text-align: center;
    border-bottom: 1px solid var(--rule);
}
.hero .eyebrow {
    font-family: 'Geist', sans-serif;
    font-size: 0.74rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-quiet);
    font-weight: 500;
    margin-bottom: 1rem;
}
.hero h1 {
    font-family: 'Fraunces', serif;
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 0.6rem;
    font-variation-settings: "opsz" 144;
}
.hero .tagline {
    font-family: 'Fraunces', serif;
    font-style: italic;
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    color: var(--ink-soft);
    font-weight: 400;
    margin-bottom: 2rem;
    font-variation-settings: "opsz" 36;
}
.hero .lead {
    max-width: 64ch;
    margin: 0 auto 2.4rem;
    font-size: 1.08rem;
    color: var(--ink-soft);
    line-height: 1.7;
}
.hero .cta {
    display: inline-block;
    padding: 0.9rem 1.8rem;
    background: var(--ink);
    color: var(--paper);
    font-family: 'Geist', sans-serif;
    font-weight: 600;
    font-size: 0.96rem;
    border-radius: 6px;
    border: none;
    border-bottom: none;
    letter-spacing: 0.01em;
    transition: background 200ms ease, transform 200ms ease;
}
.hero .cta:hover {
    background: var(--accent);
    color: var(--paper);
    border-bottom: none;
    transform: translateY(-2px);
}
.hero .cta-secondary {
    display: inline-block;
    margin-left: 1rem;
    color: var(--ink-soft);
    font-family: 'Geist', sans-serif;
    font-weight: 500;
    font-size: 0.96rem;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 2px;
}
.hero .cta-secondary:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* ---------- Sections ---------- */
section.editorial {
    padding: 5rem 0;
    border-bottom: 1px solid var(--rule);
}
.section-num {
    font-family: 'Fraunces', serif;
    font-size: 1rem;
    color: var(--accent);
    font-weight: 500;
    font-variation-settings: 'lnum';
    margin-right: 0.6rem;
}
section h2 {
    font-family: 'Fraunces', serif;
    font-weight: 600;
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    color: var(--ink);
    margin-bottom: 0.6rem;
    line-height: 1.15;
    letter-spacing: -0.01em;
    font-variation-settings: "opsz" 60;
}
section .lede {
    color: var(--ink-soft);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 64ch;
    margin-bottom: 2rem;
}
section p {
    color: var(--ink-soft);
    line-height: 1.7;
    margin-bottom: 1rem;
}
section p strong {
    color: var(--ink);
    font-weight: 600;
}

/* ---------- Features grid ---------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem 2.5rem;
    margin-top: 2.5rem;
}
.feature {
    border-top: 1px solid var(--rule);
    padding-top: 1.4rem;
}
.feature .feature-num {
    font-family: 'Geist', sans-serif;
    font-size: 0.66rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-quiet);
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}
.feature h3 {
    font-family: 'Fraunces', serif;
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--ink);
    margin-bottom: 0.6rem;
    line-height: 1.2;
    font-variation-settings: "opsz" 24;
}
.feature p {
    font-size: 0.95rem;
    color: var(--ink-soft);
    line-height: 1.6;
    margin: 0;
}

/* ---------- Tech stack ---------- */
.stack-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.6rem 1.5rem;
    margin-top: 2rem;
}
.stack-list li {
    padding: 0.6rem 0;
    border-top: 1px solid var(--rule-soft);
    font-family: 'Geist Mono', monospace;
    font-size: 0.86rem;
    color: var(--ink);
}
.stack-list li::before {
    content: "›  ";
    color: var(--accent);
    font-weight: bold;
}

/* ---------- CTA Section ---------- */
.cta-section {
    background: var(--paper-deep);
    padding: 5rem 0;
    text-align: center;
    border-bottom: 1px solid var(--rule);
}
.cta-section .big-cta {
    display: inline-block;
    padding: 1.1rem 2.4rem;
    background: var(--accent);
    color: var(--paper);
    font-family: 'Geist', sans-serif;
    font-weight: 600;
    font-size: 1.05rem;
    border-radius: 6px;
    margin-top: 1.6rem;
    letter-spacing: 0.01em;
    transition: background 200ms ease, transform 200ms ease;
    border-bottom: none;
    box-shadow: 0 4px 0 rgba(122, 24, 32, 0.15);
}
.cta-section .big-cta:hover {
    background: var(--accent-soft);
    transform: translateY(-2px);
    color: var(--paper);
    border-bottom: none;
}
.cta-section .url-display {
    display: inline-block;
    margin-top: 1.2rem;
    font-family: 'Geist Mono', monospace;
    font-size: 0.9rem;
    color: var(--ink-quiet);
    padding: 0.4rem 0.8rem;
    background: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 4px;
}

/* ---------- Credits ---------- */
.credits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2.5rem;
    margin-top: 2.5rem;
}
.credit-block .label-mini {
    font-family: 'Geist', sans-serif;
    font-size: 0.66rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-quiet);
    font-weight: 500;
    margin-bottom: 0.4rem;
    display: block;
}
.credit-block .name {
    font-family: 'Fraunces', serif;
    font-weight: 500;
    font-size: 1.15rem;
    color: var(--ink);
    margin-bottom: 0.4rem;
    font-variation-settings: "opsz" 24;
}
.credit-block .links {
    font-size: 0.88rem;
    color: var(--ink-quiet);
    margin-top: 0.4rem;
}
.credit-block .links a {
    margin-right: 0.4rem;
}

/* ---------- Footer ---------- */
.site-footer {
    padding: 3rem 0 2rem;
    background: var(--paper-deep);
    border-top: 1px solid var(--rule);
    text-align: center;
    font-size: 0.86rem;
    color: var(--ink-quiet);
    line-height: 1.7;
}
.site-footer strong { color: var(--ink-soft); font-weight: 600; }
.site-footer .place {
    font-family: 'Fraunces', serif;
    font-style: italic;
    color: var(--ink-soft);
    margin-top: 0.6rem;
    font-size: 0.94rem;
}
.site-footer .footnote {
    margin-top: 1.4rem;
    font-size: 0.78rem;
    color: var(--ink-faint);
}

/* ---------- Quote / highlight box ---------- */
.highlight-box {
    background: var(--accent-wash);
    border-left: 3px solid var(--accent);
    padding: 1.4rem 1.8rem;
    margin: 2rem 0;
    border-radius: 0 6px 6px 0;
    font-family: 'Fraunces', serif;
    font-style: italic;
    font-size: 1.05rem;
    color: var(--ink);
    line-height: 1.6;
    font-variation-settings: "opsz" 24;
}

/* ---------- Animations ---------- */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
.hero, section.editorial, .cta-section {
    animation: fadeUp 500ms cubic-bezier(0.2, 0.6, 0.2, 1) both;
}

@media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .academic-bar .container {
        grid-template-columns: 1fr;
        gap: 0.8rem;
        text-align: center;
    }
    .academic-bar .crest { justify-self: center; }
    .academic-bar .crest img { width: 50px; height: 50px; }
    .academic-bar .acad-text { font-size: 0.68rem; }
    .academic-bar .acad-text .programme { font-size: 0.78rem; }
    .hero { padding: 3rem 0; }
    .hero .cta-secondary { display: block; margin: 1rem 0 0; }
    section.editorial { padding: 3.5rem 0; }
    .features-grid { gap: 2rem 1.5rem; }
}