/* ============================================
   Astrogo — Design System
   Primary: #0047FF | Black: #0a0a0f | White: #fff
   ============================================ */

:root {
    --clr-primary:       #0047FF;
    --clr-primary-dark:  #0035cc;
    --clr-primary-light: #3369ff;
    --clr-primary-glow:  rgba(0, 71, 255, .32);
    --clr-black:         #0a0a0f;
    --clr-dark:          #0d0d14;
    --clr-dark-2:        #111118;
    --clr-dark-3:        #1a1a28;
    --clr-white:         #ffffff;
    --clr-gray-light:    #f0f2f7;
    --clr-gray-100:      #e8eaef;
    --clr-gray-400:      #9a9aaa;
    --clr-gray-600:      #5a5a6a;
    --radius-sm:         .5rem;
    --radius-md:         .875rem;
    --radius-lg:         1.5rem;
    --radius-xl:         2rem;
    --transition:        .3s ease;
    --shadow-blue:       0 8px 32px var(--clr-primary-glow);
}

/* ── Base ── */
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--clr-white);
    color: var(--clr-black);
    overflow-x: hidden;
    padding-top: 70px;
}

body.page-home { padding-top: 0; }

/* ── Bootstrap overrides ── */
.btn-primary {
    background: var(--clr-primary);
    border-color: var(--clr-primary);
    font-weight: 600;
    transition: all var(--transition);
}
.btn-primary:hover,
.btn-primary:focus {
    background: var(--clr-primary-dark);
    border-color: var(--clr-primary-dark);
    box-shadow: var(--shadow-blue);
    transform: translateY(-1px);
}
.btn-outline-primary {
    color: var(--clr-primary);
    border-color: var(--clr-primary);
    font-weight: 600;
    transition: all var(--transition);
}
.btn-outline-primary:hover {
    background: var(--clr-primary);
    border-color: var(--clr-primary);
    color: #fff;
    box-shadow: var(--shadow-blue);
    transform: translateY(-1px);
}
.border-primary { border-color: var(--clr-primary) !important; }
.bg-primary     { background: var(--clr-primary) !important; }
.text-primary   { color: var(--clr-primary) !important; }
.card           { border-radius: var(--radius-md); }

/* ── Navbar ── */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: .9rem 0;
    background: rgba(10, 10, 15, .95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,.06);
    transition: padding .35s ease, background .35s ease, box-shadow .35s ease;
}
.navbar.nav-top {
    background: transparent;
    border-bottom-color: transparent;
    box-shadow: none;
}
.navbar.nav-top.nav-scrolled {
    background: rgba(10, 10, 15, .92);
    border-bottom-color: rgba(255,255,255,.06);
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: .625rem;
    text-decoration: none;
}
.navbar-brand .brand-logo {
    height: 42px;
    width: auto;
    filter: invert(1) brightness(10);
    transition: opacity .2s;
}
.navbar-brand:hover .brand-logo { opacity: .85; }
.navbar .nav-link {
    color: rgba(255,255,255,.75);
    font-weight: 500;
    font-size: .9rem;
    transition: color var(--transition);
    padding: .4rem .75rem !important;
}
.navbar .nav-link:hover { color: #fff; }
.navbar .btn-primary {
    padding: .4rem 1.25rem;
    border-radius: 50rem;
    font-size: .875rem;
}
.navbar .btn-outline-light {
    padding: .4rem 1.25rem;
    border-radius: 50rem;
    border-color: rgba(255,255,255,.25);
    color: rgba(255,255,255,.8);
    font-size: .875rem;
    font-weight: 500;
    transition: all var(--transition);
}
.navbar .btn-outline-light:hover {
    background: rgba(255,255,255,.08);
    border-color: rgba(255,255,255,.45);
    color: #fff;
}
.navbar-toggler {
    border-color: rgba(255,255,255,.25);
    padding: .35rem .6rem;
}
.navbar-toggler-icon { filter: invert(1); }

/* ── Hero ── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--clr-black);
    overflow: hidden;
    padding: 7rem 0 5rem;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 90% 60% at 50% -10%, rgba(0,71,255,.22) 0%, transparent 60%),
        radial-gradient(ellipse 50% 50% at 85% 65%,  rgba(0,71,255,.10) 0%, transparent 55%),
        var(--clr-black);
    will-change: transform;
}
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,71,255,.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,71,255,.025) 1px, transparent 1px);
    background-size: 64px 64px;
    pointer-events: none;
}
.hero-stars { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.star {
    position: absolute;
    border-radius: 50%;
    background: #fff;
    animation: twinkle var(--dur, 3s) ease-in-out infinite var(--delay, 0s);
}
@keyframes twinkle {
    0%, 100% { opacity: var(--lo, .15); transform: scale(1); }
    50%       { opacity: 1; transform: scale(1.3); }
}
.hero-content { position: relative; z-index: 2; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    background: rgba(0,71,255,.12);
    border: 1px solid rgba(0,71,255,.28);
    color: rgba(255,255,255,.88);
    border-radius: 50rem;
    padding: .35rem .9rem;
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .04em;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(8px);
}
.badge-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--clr-primary);
    animation: pulse-dot 2s ease-in-out infinite;
    flex-shrink: 0;
}
@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0,71,255,.7); }
    50%       { box-shadow: 0 0 0 6px rgba(0,71,255,0); }
}
.hero-title {
    font-size: clamp(2.4rem, 5.5vw, 4.2rem);
    font-weight: 800;
    line-height: 1.1;
    color: #fff;
    margin-bottom: 1.25rem;
    letter-spacing: -.03em;
}
.gradient-text {
    background: linear-gradient(135deg, #6699ff 0%, #0047ff 45%, #00c6ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,.55);
    max-width: 500px;
    line-height: 1.75;
    margin-bottom: 2.5rem;
}
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
.btn-hero-primary {
    background: var(--clr-primary);
    color: #fff;
    border: none;
    border-radius: 50rem;
    padding: .875rem 2rem;
    font-size: .975rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    transition: all .3s ease;
    box-shadow: 0 4px 20px rgba(0,71,255,.4);
}
.btn-hero-primary:hover {
    background: var(--clr-primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0,71,255,.55);
}
.btn-hero-outline {
    color: rgba(255,255,255,.75);
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 50rem;
    padding: .875rem 2rem;
    font-size: .975rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    transition: all .3s ease;
    background: rgba(255,255,255,.04);
    backdrop-filter: blur(8px);
}
.btn-hero-outline:hover {
    background: rgba(255,255,255,.09);
    border-color: rgba(255,255,255,.35);
    color: #fff;
    transform: translateY(-2px);
}

/* ── Cosmic visual ── */
.hero-visual { position: relative; z-index: 2; display: flex; justify-content: center; align-items: center; }
.cosmic-sphere {
    position: relative;
    width: 360px;
    height: 360px;
}
.sphere-ring {
    position: absolute;
    border-radius: 50%;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(0,71,255,.18);
    animation: spin var(--spd, 28s) linear infinite;
    animation-direction: var(--dir, normal);
}
.sphere-ring.r1 { width: 100%; height: 100%; --spd: 32s; }
.sphere-ring.r2 { width: 72%;  height: 72%;  --spd: 22s; --dir: reverse; border-color: rgba(0,71,255,.28); }
.sphere-ring.r3 { width: 46%;  height: 46%;  --spd: 14s; border-color: rgba(0,71,255,.45); }
@keyframes spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}
.ring-dot {
    position: absolute;
    width: 9px; height: 9px;
    border-radius: 50%;
    background: var(--clr-primary);
    top: -4px; left: calc(50% - 4px);
    box-shadow: 0 0 10px var(--clr-primary), 0 0 24px rgba(0,71,255,.5);
}
.sphere-core {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 80px; height: 80px;
    border-radius: 50%;
    background: rgba(0,71,255,.12);
    border: 1px solid rgba(0,71,255,.3);
    display: flex; align-items: center; justify-content: center;
}
.core-glow {
    position: absolute;
    inset: -40px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,71,255,.22) 0%, transparent 70%);
    animation: glow-pulse 3.5s ease-in-out infinite;
}
.core-symbol {
    font-size: 2.2rem;
    color: rgba(255,255,255,.9);
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 0 10px rgba(0,71,255,.8));
}
@keyframes glow-pulse {
    0%, 100% { opacity: .5; transform: scale(1); }
    50%       { opacity: 1; transform: scale(1.12); }
}
.float-sym {
    position: absolute;
    color: rgba(255,255,255,.45);
    font-size: 1.25rem;
    animation: float-anim var(--fd, 6s) ease-in-out infinite var(--fdy, 0s);
    user-select: none;
}
.float-sym.s1 { top:  6%; left: 46%; --fd: 5.0s; --fdy:  0.0s; }
.float-sym.s2 { top: 32%; left: 88%; --fd: 7.0s; --fdy:  1.2s; }
.float-sym.s3 { top: 72%; left: 72%; --fd: 6.2s; --fdy:  2.3s; }
.float-sym.s4 { top: 68%; left:  8%; --fd: 8.0s; --fdy:  0.6s; }
.float-sym.s5 { top: 18%; left: 10%; --fd: 5.5s; --fdy:  1.8s; }
.float-sym.s6 { top: 86%; left: 30%; --fd: 7.5s; --fdy:  0.3s; }
@keyframes float-anim {
    0%, 100% { transform: translateY(0)    rotate(0deg);  opacity: .45; }
    50%       { transform: translateY(-14px) rotate(8deg); opacity: .8; }
}

/* ── Stats bar ── */
.stats-bar {
    background: var(--clr-dark-2);
    border-top:    1px solid rgba(255,255,255,.04);
    border-bottom: 1px solid rgba(255,255,255,.04);
    padding: 2.75rem 0;
}
.stat-col {
    text-align: center;
    padding: .25rem 1.5rem;
    border-right: 1px solid rgba(255,255,255,.07);
}
.stat-col:last-child { border-right: 0; }
.stat-value {
    font-size: 2.1rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
    margin-bottom: .4rem;
}
.stat-value em { color: var(--clr-primary); font-style: normal; }
.stat-label { font-size: .82rem; color: var(--clr-gray-400); font-weight: 500; }

/* ── Section helpers ── */
.sec-label {
    display: inline-block;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--clr-primary);
    margin-bottom: .625rem;
}
.sec-title {
    font-size: clamp(1.7rem, 3.5vw, 2.6rem);
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: -.025em;
    margin-bottom: .75rem;
}
.sec-title.light { color: #fff; }
.sec-title.dark  { color: var(--clr-black); }
.sec-sub {
    font-size: 1rem;
    line-height: 1.72;
    max-width: 540px;
    margin: 0 auto;
}
.sec-sub.light { color: rgba(255,255,255,.5); }
.sec-sub.dark  { color: var(--clr-gray-600); }

/* ── Features ── */
.features-section {
    background: var(--clr-dark);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}
.features-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,71,255,.4), transparent);
}
.feat-card {
    background: rgba(255,255,255,.025);
    border: 1px solid rgba(255,255,255,.06);
    border-radius: var(--radius-lg);
    padding: 2rem 1.75rem;
    height: 100%;
    transition: all .4s ease;
    position: relative;
    overflow: hidden;
}
.feat-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--clr-primary), transparent);
    opacity: 0;
    transition: opacity .4s ease;
}
.feat-card:hover {
    background: rgba(0,71,255,.055);
    border-color: rgba(0,71,255,.22);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0,71,255,.14);
}
.feat-card:hover::after { opacity: 1; }
.feat-icon {
    width: 52px; height: 52px;
    border-radius: var(--radius-sm);
    background: rgba(0,71,255,.14);
    border: 1px solid rgba(0,71,255,.2);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.45rem;
    margin-bottom: 1.2rem;
    transition: all .4s ease;
}
.feat-card:hover .feat-icon {
    background: rgba(0,71,255,.24);
    box-shadow: 0 4px 20px rgba(0,71,255,.3);
}
.feat-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: .45rem;
}
.feat-desc { font-size: .875rem; color: rgba(255,255,255,.45); line-height: 1.65; margin: 0; }

/* ── How it works ── */
.how-section {
    background: var(--clr-gray-light);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}
.how-section::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,71,255,.15), transparent);
}
.step-connector {
    position: absolute;
    top: 32px;
    left: calc(50% + 40px);
    right: calc(-50% + 40px);
    height: 2px;
    background: linear-gradient(90deg, rgba(0,71,255,.35), rgba(0,71,255,.05));
}
.step-wrap { position: relative; }
.step-num {
    width: 64px; height: 64px;
    border-radius: 50%;
    background: var(--clr-primary);
    color: #fff;
    font-size: 1.4rem;
    font-weight: 800;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.25rem;
    box-shadow: 0 4px 20px rgba(0,71,255,.3);
    transition: all .3s ease;
}
.step-wrap:hover .step-num {
    transform: scale(1.1);
    box-shadow: 0 8px 32px rgba(0,71,255,.42);
}
.step-title { font-size: 1.05rem; font-weight: 700; color: var(--clr-black); margin-bottom: .4rem; }
.step-desc  { font-size: .875rem; color: var(--clr-gray-600); line-height: 1.65; }

/* ── Pricing ── */
.pricing-section { background: var(--clr-white); padding: 6rem 0; }
.pricing-card {
    background: #fff;
    border: 1px solid var(--clr-gray-100);
    border-radius: var(--radius-xl);
    padding: 2.5rem 2rem;
    height: 100%;
    transition: all .4s ease;
    position: relative;
}
.pricing-card:hover {
    box-shadow: 0 16px 56px rgba(0,0,0,.1);
    transform: translateY(-4px);
}
.pricing-card.popular {
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 1px var(--clr-primary), var(--shadow-blue);
    transform: scale(1.04);
}
.pricing-card.popular:hover { transform: scale(1.04) translateY(-4px); }
.popular-badge {
    position: absolute;
    top: -14px; left: 50%;
    transform: translateX(-50%);
    background: var(--clr-primary);
    color: #fff;
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    padding: .28rem 1rem;
    border-radius: 50rem;
    white-space: nowrap;
}
.pricing-tier {
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--clr-gray-400);
    margin-bottom: .75rem;
}
.pricing-amt {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--clr-black);
    line-height: 1;
    margin-bottom: .25rem;
}
.pricing-amt .cur { font-size: 1.25rem; vertical-align: super; font-weight: 700; color: var(--clr-gray-600); }
.pricing-amt .per { font-size: .85rem; color: var(--clr-gray-400); font-weight: 500; }
.pricing-card.popular .pricing-amt { color: var(--clr-primary); }
.pricing-desc {
    font-size: .875rem;
    color: var(--clr-gray-600);
    line-height: 1.65;
    margin-bottom: 1.5rem;
    min-height: 2.75rem;
}
.pricing-feats { list-style: none; padding: 0; margin: 0 0 2rem; }
.pricing-feats li {
    font-size: .875rem;
    color: var(--clr-gray-600);
    padding: .375rem 0;
    display: flex;
    align-items: center;
    gap: .6rem;
    border-bottom: 1px solid var(--clr-gray-100);
}
.pricing-feats li:last-child { border-bottom: 0; }
.pricing-feats li::before {
    content: '✓';
    width: 18px; height: 18px;
    border-radius: 50%;
    background: rgba(0,71,255,.1);
    color: var(--clr-primary);
    font-size: .65rem;
    font-weight: 800;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.pricing-card.popular .pricing-feats li::before { background: rgba(0,71,255,.15); }

/* ── CTA section ── */
.cta-section {
    background: var(--clr-primary);
    padding: 5.5rem 0;
    position: relative;
    overflow: hidden;
    text-align: center;
}
.cta-section::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 15% 50%, rgba(255,255,255,.08) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 50%, rgba(0,0,0,.15) 0%,        transparent 55%);
    pointer-events: none;
}
.cta-deco {
    position: absolute;
    font-size: 14rem;
    opacity: .05;
    pointer-events: none;
    user-select: none;
    line-height: 1;
}
.cta-deco.d1 { right: 4%; top: 50%; transform: translateY(-50%); }
.cta-deco.d2 { left: 4%;  top: 50%; transform: translateY(-50%); }
.cta-title {
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    margin-bottom: .875rem;
    letter-spacing: -.025em;
}
.cta-sub {
    font-size: 1.05rem;
    color: rgba(255,255,255,.72);
    margin-bottom: 2.5rem;
    max-width: 460px;
    margin-left: auto; margin-right: auto;
    line-height: 1.7;
}
.btn-cta {
    background: #fff;
    color: var(--clr-primary);
    border: none;
    border-radius: 50rem;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    transition: all .3s ease;
    box-shadow: 0 4px 20px rgba(0,0,0,.18);
}
.btn-cta:hover {
    color: var(--clr-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0,0,0,.22);
}

/* ── Footer ── */
.site-footer {
    background: var(--clr-black);
    color: rgba(255,255,255,.38);
    padding: 2.25rem 0;
    border-top: 1px solid rgba(255,255,255,.05);
    font-size: .85rem;
}
.site-footer a {
    color: rgba(255,255,255,.38);
    text-decoration: none;
    transition: color .2s;
}
.site-footer a:hover { color: rgba(255,255,255,.75); }

/* ── Scroll animations ── */
.fade-up {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .65s ease, transform .65s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up.d1 { transition-delay: .1s; }
.fade-up.d2 { transition-delay: .2s; }
.fade-up.d3 { transition-delay: .3s; }
.fade-up.d4 { transition-delay: .4s; }

.fade-in {
    opacity: 0;
    transition: opacity .65s ease;
}
.fade-in.visible { opacity: 1; }
.fade-in.d1 { transition-delay: .1s; }
.fade-in.d2 { transition-delay: .2s; }
.fade-in.d3 { transition-delay: .3s; }

/* ── Footer nav ── */
.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    flex-wrap: wrap;
}
@media (max-width: 767px) {
    .footer-inner { flex-direction: column; align-items: center; text-align: center; }
}
.footer-logo { height: 28px; filter: invert(1) brightness(10); opacity: .35; }
.footer-nav { display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: center; }
.footer-nav a {
    color: rgba(255,255,255,.38);
    text-decoration: none;
    font-size: .85rem;
    transition: color .2s;
}
.footer-nav a:hover { color: rgba(255,255,255,.75); }
.footer-copy { font-size: .82rem; }

/* ── Static pages ── */
.static-page {
    min-height: 60vh;
    padding: 4rem 0 5rem;
}
.static-page h1 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -.025em;
    margin-bottom: 1.5rem;
}
.static-page .static-body {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--clr-gray-600);
}
.static-page .static-body h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--clr-black);
    margin-top: 2rem;
    margin-bottom: .75rem;
}

/* ── Auth pages ── */
.auth-page {
    min-height: calc(100vh - 70px);
    background: var(--clr-dark);
    display: flex;
    align-items: center;
    padding: 3rem 0;
    position: relative;
    overflow: hidden;
}
.auth-page-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% -5%, rgba(0,71,255,.18) 0%, transparent 60%),
        radial-gradient(ellipse 40% 40% at 80% 80%, rgba(0,71,255,.08) 0%, transparent 50%);
    pointer-events: none;
}
.auth-stars { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.auth-card {
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: var(--radius-xl);
    padding: 2.75rem 2.25rem;
    width: 100%;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: relative;
    z-index: 1;
}
.auth-logo {
    display: block;
    margin: 0 auto 2rem;
    height: 38px;
    filter: invert(1) brightness(10);
}
.auth-title {
    font-size: 1.55rem;
    font-weight: 800;
    color: #fff;
    text-align: center;
    margin-bottom: .4rem;
    letter-spacing: -.025em;
}
.auth-subtitle {
    font-size: .875rem;
    color: rgba(255,255,255,.4);
    text-align: center;
    margin-bottom: 2rem;
    line-height: 1.5;
}
.auth-card .form-label {
    color: rgba(255,255,255,.65);
    font-size: .85rem;
    font-weight: 500;
    margin-bottom: .375rem;
}
.auth-card .form-control {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    color: #fff;
    border-radius: var(--radius-sm);
    padding: .7rem 1rem;
    font-size: .9rem;
    transition: background .25s, border-color .25s, box-shadow .25s;
}
.auth-card .form-control:focus {
    background: rgba(255,255,255,.09);
    border-color: rgba(0,71,255,.55);
    box-shadow: 0 0 0 3px rgba(0,71,255,.15);
    color: #fff;
    outline: none;
}
.auth-card .form-control::placeholder { color: rgba(255,255,255,.22); }
.auth-card .form-text { color: rgba(255,255,255,.3); font-size: .78rem; margin-top: .35rem; }
.auth-card .alert-danger {
    background: rgba(220,53,69,.1);
    border: 1px solid rgba(220,53,69,.22);
    color: #ff8585;
    border-radius: var(--radius-sm);
    font-size: .875rem;
    padding: .7rem 1rem;
}
.auth-divider {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin: 1.5rem 0;
}
.auth-divider hr { flex: 1; margin: 0; border-color: rgba(255,255,255,.08); }
.auth-divider span { font-size: .78rem; color: rgba(255,255,255,.28); white-space: nowrap; }
.btn-google {
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.1);
    color: rgba(255,255,255,.75);
    font-size: .875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    padding: .7rem 1rem;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .625rem;
    text-decoration: none;
    transition: background .25s, border-color .25s, color .25s;
}
.btn-google:hover {
    background: rgba(255,255,255,.09);
    border-color: rgba(255,255,255,.2);
    color: #fff;
}
.auth-card .btn-primary {
    width: 100%;
    border-radius: var(--radius-sm);
    padding: .75rem;
    font-size: .95rem;
    font-weight: 600;
    letter-spacing: .01em;
}
.auth-footer-link {
    text-align: center;
    margin-top: 1.5rem;
    font-size: .85rem;
    color: rgba(255,255,255,.38);
}
.auth-footer-link a {
    color: var(--clr-primary-light);
    text-decoration: none;
    font-weight: 500;
    transition: color .2s;
}
.auth-footer-link a:hover { color: #fff; }

/* ── Chart list card ── */
.chart-list-card {
    transition: transform .2s ease, box-shadow .2s ease;
}
.chart-list-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 .5rem 1.5rem rgba(0, 0, 0, .08) !important;
}
.chart-symbols {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-family: serif;
    line-height: 1;
}
.chart-symbol-group {
    display: inline-flex;
    align-items: center;
    gap: .25rem;
}
.chart-symbol-icon {
    font-size: 1.75rem;
    color: var(--clr-gray-600);
}
.chart-symbol-sign {
    font-size: 2rem;
    color: var(--clr-primary);
    font-weight: 600;
}
.chart-symbol-label {
    font-family: 'Inter', sans-serif;
    font-size: .85rem;
    font-weight: 600;
    color: var(--clr-gray-600);
    letter-spacing: .04em;
}
.chart-actions .btn {
    white-space: nowrap;
}

/* ── Chart show tabs ── */
.chart-tabs .nav-link {
    color: var(--clr-gray-600);
    font-weight: 600;
    border: none;
    border-bottom: 2px solid transparent;
    padding: .85rem 1.25rem;
    background: transparent;
    transition: color .2s, border-color .2s;
}
.chart-tabs .nav-link:hover {
    color: var(--clr-primary);
    border-bottom-color: var(--clr-gray-100);
}
.chart-tabs .nav-link.active {
    color: var(--clr-primary);
    background: transparent;
    border-bottom-color: var(--clr-primary);
}
.chart-tab-actions {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
}
.chart-tab-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
}

/* ── Print styles ── */
@media print {
    body { padding-top: 0 !important; }
    .navbar, .site-footer, .chart-tabs, .chart-tab-actions,
    #ai-btn, #ai-spinner, .chart-print-hide,
    .tab-content button, .tab-content .btn { display: none !important; }
    /* Tab-pane visibility is controlled inline by the print JS handler */
    .tab-pane { opacity: 1 !important; }
    .card { box-shadow: none !important; border: 1px solid #ddd !important; }
    .card-header { background: transparent !important; }
    main { padding: 0 !important; }
    .container { max-width: 100% !important; }
}