/* OCTANS SYSTEMS — Animations, centered buttons, interactive */

/* ----- Animations ----- */
@keyframes os-fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes os-fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.os-animate {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.65s ease, transform 0.65s ease;
}

.os-animate.os-visible {
    opacity: 1;
    transform: translateY(0);
}

.os-animate .os-list li {
    opacity: 0;
    transform: translateX(-12px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

.os-animate.os-visible .os-list li {
    opacity: 1;
    transform: translateX(0);
}

.os-animate .os-list li:nth-child(1) { transition-delay: 0.05s; }
.os-animate .os-list li:nth-child(2) { transition-delay: 0.1s; }
.os-animate .os-list li:nth-child(3) { transition-delay: 0.15s; }
.os-animate .os-list li:nth-child(4) { transition-delay: 0.2s; }
.os-animate .os-list li:nth-child(5) { transition-delay: 0.25s; }
.os-animate .os-list li:nth-child(6) { transition-delay: 0.3s; }

.os-animate .os-pillar-item {
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.5s ease, transform 0.5s ease, border-left-color 0.35s ease, background 0.35s ease;
}

.os-animate.os-visible .os-pillar-item {
    opacity: 1;
    transform: translateX(0);
}

.os-animate .os-pillar-item:nth-child(1) { transition-delay: 0.05s; }
.os-animate .os-pillar-item:nth-child(2) { transition-delay: 0.15s; }
.os-animate .os-pillar-item:nth-child(3) { transition-delay: 0.25s; }
.os-animate .os-pillar-item:nth-child(4) { transition-delay: 0.35s; }

/* ----- Header: κεντραρισμένο ----- */
.os-header {
    padding: 10rem 2rem 5rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.os-header-inner {
    max-width: 900px;
    margin: 0 auto;
}

.os-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 400;
    letter-spacing: 8px;
    color: var(--text-primary);
    margin: 0 0 0.5rem 0;
    animation: os-fadeInUp 0.8s ease forwards;
}

.os-tagline {
    font-family: var(--font-body);
    font-size: 1.1rem;
    letter-spacing: 3px;
    color: var(--text-muted);
    margin: 0 0 1rem 0;
    opacity: 0;
    animation: os-fadeInUp 0.7s ease 0.2s forwards;
}

.os-meta {
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    opacity: 0;
    margin: 0;
    animation: os-fadeIn 0.6s ease 0.4s forwards;
}

/* ----- Main content: όλα κεντραρισμένα ----- */
.os-main {
    max-width: 100%;
}

.os-block {
    padding: 4rem 2rem;
    text-align: center;
}

.os-wrap {
    max-width: 900px;
    margin: 0 auto;
}

.os-heading {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 3px;
    color: var(--text-primary);
    margin: 0 0 1.5rem 0;
}

.os-lead {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-muted);
    margin: 0 auto 1.5rem auto;
    max-width: 720px;
}

.os-quote {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-style: italic;
    font-weight: 300;
    color: var(--text-primary);
    margin: 0 auto;
    max-width: 560px;
    padding: 0 1rem;
    border-left: none;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 1rem;
}

/* ----- Two-column “What we develop” — κεντραρισμένο ----- */
.os-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
    justify-items: center;
    text-align: center;
}

.os-two-col .os-col {
    text-align: center;
}

.os-two-col .os-col:first-child {
    max-width: 380px;
}

.os-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: inline-block;
    text-align: left;
}

.os-list li {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 2;
    padding-left: 1.25rem;
    position: relative;
    transition: color 0.3s ease, transform 0.25s ease;
}

.os-list li:hover {
    color: var(--text-primary);
    transform: translateX(6px);
}

.os-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.75em;
    width: 4px;
    height: 4px;
    background: var(--text-muted);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.os-list li:hover::before {
    background: var(--neon-blue);
    box-shadow: 0 0 8px var(--neon-blue-glow);
}

.os-note {
    max-width: 360px;
}

.os-note p {
    font-size: 0.95rem;
    line-height: 1.75;
    color: var(--text-muted);
    margin: 0;
}

/* ----- Pillars: λίστα κεντραρισμένη ----- */
.os-pillar-list {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    max-width: 620px;
}

.os-pillar-item {
    display: flex;
    gap: 2rem;
    padding: 2rem 1.25rem;
    margin: 0 auto;
    border-bottom: 1px solid var(--border-color);
    border-left: 3px solid transparent;
    transition: border-left-color 0.35s ease, background 0.35s ease, transform 0.3s ease;
    text-align: left;
}

.os-pillar-item:hover {
    border-left-color: var(--neon-blue);
    background: rgba(0, 136, 255, 0.04);
    transform: translateX(8px);
}

.os-pillar-item:last-child {
    border-bottom: none;
}

.os-pillar-num {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--text-muted);
    flex-shrink: 0;
    min-width: 2rem;
    letter-spacing: 0.02em;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.os-pillar-item:hover .os-pillar-num {
    color: var(--neon-blue);
    text-shadow: 0 0 12px var(--neon-blue-glow);
}

.os-pillar-item h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 400;
    letter-spacing: 1px;
    color: var(--text-primary);
    margin: 0 0 0.5rem 0;
    transition: color 0.3s ease;
}

.os-pillar-item p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-muted);
    margin: 0;
    transition: color 0.3s ease;
}

.os-pillar-item:hover p {
    color: rgba(237, 237, 237, 0.9);
}

/* ----- Financial Tools: OSRI & OMRT widgets (iframe only) ----- */
.os-financial-tools .os-wrap {
    max-width: 1200px;
}

.os-financial-tools .os-heading {
    font-size: 1.85rem;
}

.os-financial-tools {
    border-top: 1px solid var(--border-color);
}

.os-tools-intro {
    margin-bottom: 2.5rem;
}

.os-widgets-thermo,
.os-widgets-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 0 auto;
    justify-items: center;
    align-items: start;
}

.os-widgets-charts {
    margin-top: 2.5rem;
    gap: 2rem;
}

.os-widget-wrap {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.25rem;
    width: 100%;
    max-width: 320px;
    transition: border-color 0.35s ease, box-shadow 0.35s ease;
}

/* Θερμόμετρα: χωρίς κουτιά/γραμμές — ενσωματωμένα στο site, όχι εξωτερικό παράθυρο */
.os-widgets-thermo .os-widget-wrap {
    padding: 0.75rem 0;
    width: 340px;
    max-width: 100%;
    overflow: visible;
    min-height: 0;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    text-align: center;
}

.os-widgets-thermo .os-widget-wrap:hover {
    border: none;
    box-shadow: none;
}

.os-widgets-thermo .os-widget-title {
    margin-bottom: 0.5rem;
    padding-bottom: 0.4rem;
    border-bottom: none;
    text-align: center;
    font-size: 1.2rem;
}

/* Παράγραφοι δεικτών: κεντραρισμένα, όλο το κείμενο ορατό (χωρίς κόψιμο) */
.os-widgets-thermo .os-widget-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-muted);
    margin: 0 auto 1rem auto;
    text-align: center;
    width: 320px;
    max-width: 100%;
}

/* OMRT: πλάτος ώστε η παράγραφος να χωρά σε 3 γραμμές */
.os-widgets-thermo .os-widget-desc-omrt {
    width: 400px;
}

.os-widget-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-muted);
    margin: 0 0 1rem 0;
}

.os-widgets-thermo .os-iframe-thermo {
    width: 100%;
    max-width: 100%;
    min-width: 280px;
    margin-left: calc(1.5rem - 3mm);
    margin-right: auto;
}

.os-widgets-charts .os-widget-wrap {
    max-width: 100%;
    padding: 1.25rem;
}

.os-widget-wrap:hover {
    border-color: var(--neon-blue);
    box-shadow: 0 0 20px rgba(0, 136, 255, 0.08);
}

.os-widget-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 2px;
    color: var(--text-primary);
    margin: 0 0 1rem 0;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.os-widgets-charts .os-widget-title {
    text-align: center;
}

.os-iframe {
    display: block;
    border: none;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.2);
}

.os-iframe-thermo {
    width: 100%;
    max-width: 100%;
    height: 360px;
}

.os-iframe-omrt {
    height: 480px;
}

/* Διαγράμματα */
.os-iframe-chart {
    width: 100%;
    min-height: 520px;
    height: 520px;
}

.os-iframe-chart-ogr {
    height: 520px;
    min-height: 520px;
}

@media (max-width: 768px) {
    .os-widgets-thermo,
    .os-widgets-charts {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 0;
    }
    .os-widgets-thermo .os-widget-wrap {
        width: 100%;
    }
    .os-widgets-thermo .os-widget-desc {
        width: 100%;
    }
    .os-widgets-thermo .os-iframe-thermo {
        width: 320px;
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    .os-widgets-charts {
        margin-top: 2.5rem;
        gap: 2rem;
    }
    .os-widgets-charts .os-widget-wrap {
        padding: 1.5rem;
    }
    .os-widget-wrap {
        max-width: 100%;
    }
}

/* ----- CTA: κεντραρισμένο κουμπί, διαδραστικό ----- */
.os-cta {
    padding: 2.5rem 2rem 4rem;
    border-top: 1px solid var(--border-color);
}

.os-cta .os-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.os-cta-label {
    font-size: 0.8rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0 0 1.25rem 0;
}

.os-cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 2.75rem;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.8rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    transition: border-color 0.35s ease, color 0.35s ease, box-shadow 0.35s ease, transform 0.25s ease;
}

.os-cta-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--neon-blue);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.35s ease;
    box-shadow: 0 0 12px var(--neon-blue-glow);
}

.os-cta-btn:hover {
    border-color: var(--neon-blue);
    color: var(--text-primary);
    box-shadow: 0 0 24px rgba(0, 136, 255, 0.15);
    transform: translateY(-2px);
}

.os-cta-btn:hover::after {
    transform: scaleX(1);
}

/* ----- Footer ----- */
.os-footer {
    text-align: center;
    padding: 2.5rem 2rem;
    border-top: 1px solid var(--border-color);
}

.os-footer p {
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin: 0;
}

.os-footer-links {
    margin-top: 0.75rem;
}

.os-link {
    color: var(--neon-blue);
    text-decoration: none;
    transition: opacity 0.25s ease, text-shadow 0.25s ease;
}

.os-link:hover {
    opacity: 1;
    text-shadow: 0 0 12px var(--neon-blue-glow);
}

/* ----- Nav: κεντραρισμένο κουμπί Octans Capital, ζωντανό hover ----- */
.os-nav .nav-links {
    display: flex;
    justify-content: center;
    align-items: center;
}

.os-nav .os-nav-back {
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    padding: 0.45rem 1.2rem;
    border-radius: 24px;
    text-decoration: none;
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease, transform 0.25s ease;
}

.os-nav .os-nav-back:hover {
    color: var(--neon-blue);
    border-color: var(--neon-blue);
    box-shadow: 0 0 16px rgba(0, 136, 255, 0.2);
    transform: scale(1.03);
}

/* ----- Responsive ----- */
@media (max-width: 768px) {
    .os-header {
        padding: 8rem 1.5rem 4rem;
    }

    .os-title {
        font-size: 1.75rem;
        letter-spacing: 4px;
    }

    .os-two-col {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .os-block {
        padding: 3rem 1.5rem;
    }

    .os-pillar-item {
        flex-direction: column;
        gap: 0.5rem;
        padding: 1.5rem 0;
    }
}