/*
 * VexaDoc — UI Components
 * Buttons, Navbar, Cards, Badges, Modal, Form
 */

/* ══════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════ */

.btn-primary {
    background: var(--accent-grad);
    color: #fff;
    border: none;
    border-radius: var(--r-lg);
    padding: .9rem 1.875rem;
    font-size: var(--text-md);
    font-weight: 700;
    font-family: var(--font-ui);
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    box-shadow: var(--shadow-accent);
    transition: filter .15s, transform .15s;
    position: relative;
    overflow: hidden;
    letter-spacing: .01em;
}
.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,.18) 50%, transparent 60%);
    background-size: 200% 100%;
    background-position: -200% center;
    transition: background-position 0s;
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-2px); }
.btn-primary:hover::after { background-position: 200% center; transition: background-position .5s ease; }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
    background: transparent;
    border: 1px solid var(--border2);
    color: var(--text);
    border-radius: var(--r-lg);
    padding: .9rem 1.875rem;
    font-size: var(--text-md);
    font-weight: 600;
    font-family: var(--font-ui);
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    transition: var(--transition);
}
.btn-ghost:hover { background: var(--bg4); border-color: var(--accent); color: var(--text); }

.btn-nav-ghost {
    color: var(--text2);
    text-decoration: none;
    font-size: var(--text-base);
    font-weight: 500;
    padding: .5rem .875rem;
    border-radius: var(--r-md);
    border: 1px solid var(--border2);
    transition: var(--transition);
}
.btn-nav-ghost:hover { color: var(--text); border-color: var(--accent); background: rgba(41,196,224,.06); }

.btn-nav-primary {
    background: var(--accent-grad);
    color: #fff;
    text-decoration: none;
    font-size: var(--text-base);
    font-weight: 700;
    padding: .5rem 1.125rem;
    border-radius: var(--r-md);
    border: none;
    cursor: pointer;
    transition: filter .15s, transform .15s;
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    letter-spacing: .01em;
}
.btn-nav-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }

/* Small action buttons (admin/panel) */
.btn-action {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    border-radius: var(--r-md);
    padding: .5rem .75rem;
    font-size: var(--text-sm);
    font-weight: 500;
    font-family: var(--font-ui);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid;
    white-space: nowrap;
    min-height: 36px;
}
.btn-action i { font-size: 11px; }
.btn-action.blue  { background: rgba(41,196,224,.1); border-color: rgba(41,196,224,.2); color: var(--cyan); }
.btn-action.blue:hover { background: rgba(41,196,224,.2); border-color: var(--cyan); color: var(--text); }
.btn-action.red   { background: rgba(248,81,73,.08); border-color: rgba(248,81,73,.25); color: var(--danger); }
.btn-action.red:hover { background: rgba(248,81,73,.2); border-color: var(--danger); color: #fff; }
.btn-action:disabled { opacity: .45; cursor: not-allowed; }

/* Submit / CTA */
.btn-submit {
    width: 100%;
    background: var(--accent-grad);
    color: #fff;
    border: none;
    border-radius: var(--r-lg);
    padding: 1rem;
    font-size: var(--text-md);
    font-weight: 700;
    font-family: var(--font-ui);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    box-shadow: var(--shadow-accent);
    transition: filter .15s, transform .15s;
    margin-top: 1.5rem;
}
.btn-submit:hover:not(:disabled) { filter: brightness(1.1); transform: translateY(-2px); }
.btn-submit:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* ══════════════════════════════════════════
   NAVBAR
══════════════════════════════════════════ */

.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(8,10,13,.88);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    animation: fadeIn .5s both;
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: .875rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}
.nav-link {
    color: var(--text2);
    text-decoration: none;
    font-size: var(--text-base);
    font-weight: 500;
    transition: color .2s;
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width .25s;
}
.nav-link:hover { color: var(--text); }
.nav-link:hover::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: .75rem; }
.nav-mobile-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border2);
    color: var(--text2);
    width: 36px; height: 36px;
    border-radius: var(--r-md);
    cursor: pointer;
    font-size: 1rem;
    align-items: center;
    justify-content: center;
}

/* ══════════════════════════════════════════
   CARDS (problem, insight, security, step)
══════════════════════════════════════════ */

/* base card */
.card-base {
    background: var(--bg3);
    border: 1px solid var(--border2);
    border-radius: var(--r-xl);
    padding: 1.75rem 1.5rem;
    transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}
.card-base:hover {
    transform: translateY(-5px);
    border-color: rgba(41,196,224,.3);
    box-shadow: 0 12px 40px rgba(41,196,224,.07);
}

/* card icon */
.card-icon {
    width: 44px; height: 44px;
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    flex-shrink: 0;
}
.card-icon.accent  { background: rgba(41,196,224,.1); border: 1px solid rgba(41,196,224,.2); }
.card-icon.accent i { color: var(--cyan); font-size: 1.1rem; }
.card-icon.danger  { background: rgba(248,81,73,.1);  border: 1px solid rgba(248,81,73,.2); }
.card-icon.danger i { color: var(--danger); font-size: 1.1rem; }

.card-title { font-size: .95rem; font-weight: 700; margin-bottom: .5rem; }
.card-desc  { font-size: .85rem; color: var(--text2); line-height: 1.65; }

/* Problem cards (left red border) */
.problem-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
.problem-card {
    background: var(--bg3);
    border: 1px solid var(--border2);
    border-left: 3px solid rgba(248,81,73,.5);
    border-radius: var(--r-xl);
    padding: 1.75rem 1.5rem;
    transition: transform .3s var(--ease), box-shadow .3s;
}
.problem-card:hover { transform: translateY(-6px); box-shadow: 0 16px 48px rgba(248,81,73,.07); }
.problem-icon { background: rgba(248,81,73,.1); border: 1px solid rgba(248,81,73,.2); }
.problem-icon i { color: var(--danger); }
.problem-card-title { font-size: .95rem; font-weight: 700; margin-bottom: .5rem; }
.problem-card-desc  { font-size: .85rem; color: var(--text2); line-height: 1.65; }

/* Steps */
.steps-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; position: relative; }
.steps-grid::before {
    content: '';
    position: absolute;
    top: 40px;
    left: calc(16.66% + 20px);
    right: calc(16.66% + 20px);
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border2), transparent);
}
.step-card { text-align: center; padding: 2rem 1.5rem; }
.step-num {
    font-size: var(--text-xs);
    font-weight: 800;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: .12em;
    margin-bottom: 1rem;
}
.step-icon {
    width: 80px; height: 80px;
    border-radius: var(--r-xl);
    background: var(--bg3);
    border: 1px solid var(--border2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all .3s;
}
.step-icon i { font-size: 1.75rem; color: var(--accent); }
.step-card:hover .step-icon {
    border-color: rgba(41,196,224,.4);
    background: rgba(41,196,224,.07);
    box-shadow: 0 0 28px rgba(41,196,224,.15);
}
.step-title { font-size: 1.05rem; font-weight: 700; margin-bottom: .625rem; }
.step-desc  { font-size: .875rem; color: var(--text2); line-height: 1.65; }

/* Insights */
.insights-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
.insight-card {
    background: var(--bg3);
    border: 1px solid var(--border2);
    border-radius: var(--r-xl);
    padding: 1.75rem 1.5rem;
    transition: transform .3s var(--ease), border-color .3s;
}
.insight-card:hover { transform: translateY(-6px); border-color: rgba(41,196,224,.3); }
.insight-icon {
    width: 44px; height: 44px;
    border-radius: var(--r-md);
    background: rgba(41,196,224,.1);
    border: 1px solid rgba(41,196,224,.2);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1rem;
}
.insight-icon i { color: var(--cyan); font-size: 1.1rem; }
.insight-title { font-size: .95rem; font-weight: 700; margin-bottom: .5rem; }
.insight-desc  { font-size: .85rem; color: var(--text2); line-height: 1.65; }

/* Security */
.security-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
.security-card {
    background: var(--bg3);
    border: 1px solid var(--border2);
    border-radius: var(--r-xl);
    padding: 1.75rem 1.5rem;
    transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}
.security-card:hover {
    transform: translateY(-5px);
    border-color: rgba(41,196,224,.3);
    box-shadow: 0 12px 40px rgba(41,196,224,.08);
}
.security-icon {
    width: 44px; height: 44px;
    border-radius: var(--r-md);
    background: rgba(41,196,224,.1);
    border: 1px solid rgba(41,196,224,.2);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1rem;
}
.security-icon i { color: var(--cyan); font-size: 1.1rem; }
.security-card-title { font-size: .95rem; font-weight: 700; margin-bottom: .5rem; }
.security-card-desc  { font-size: .85rem; color: var(--text2); line-height: 1.65; }

/* ══════════════════════════════════════════
   BADGES
══════════════════════════════════════════ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    border-radius: var(--r-full);
    padding: .35rem 1rem;
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .07em;
}
.badge.accent {
    background: rgba(41,196,224,.1);
    border: 1px solid rgba(41,196,224,.25);
    color: var(--cyan-light);
}
.badge.success {
    background: rgba(34,197,94,.08);
    border: 1px solid rgba(34,197,94,.2);
    color: var(--success);
}
.badge.danger {
    background: rgba(248,81,73,.1);
    border: 1px solid rgba(248,81,73,.3);
    color: var(--danger);
}
.badge-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: currentColor;
    animation: pulse 2s infinite;
}

/* ══════════════════════════════════════════
   FORMS
══════════════════════════════════════════ */
.form-group    { margin-bottom: 1.25rem; }
.form-label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--text3);
    margin-bottom: .4rem;
}
.form-input {
    width: 100%;
    background: var(--bg3);
    border: 1px solid var(--border2);
    border-radius: var(--r-md);
    padding: .75rem 1rem;
    color: var(--text);
    font-size: .9rem;
    font-family: var(--font-ui);
    transition: border-color .2s, box-shadow .2s;
    outline: none;
}
.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(41,196,224,.15);
}
.form-input::placeholder { color: var(--text3); }
.form-note {
    font-size: var(--text-xs);
    color: var(--text3);
    text-align: center;
    margin-top: 1rem;
    line-height: 1.5;
}

/* ══════════════════════════════════════════
   MODAL (generic overlay)
══════════════════════════════════════════ */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(5,7,10,.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    animation: fadeIn .2s ease;
}
.modal-overlay.hidden { display: none; }

.modal-card {
    width: 100%;
    max-width: 440px;
    background: var(--bg2);
    border: 1px solid var(--border2);
    border-radius: var(--r-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(41,196,224,.06);
    animation: fadeUp .3s var(--ease) both;
    position: relative;
}
.modal-card-accent {
    height: 3px;
    background: var(--accent-grad);
}
.modal-card-accent.green {
    background: linear-gradient(135deg, #22C55E 0%, #4ade80 100%);
}
.modal-card-inner { padding: 2rem 2rem 1.75rem; }

.modal-close {
    position: absolute;
    top: 14px; right: 14px;
    width: 30px; height: 30px;
    border-radius: var(--r-md);
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: var(--transition);
    z-index: 2;
}
.modal-close:hover { background: var(--border2); color: var(--text); }

.modal-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: .5rem;
    letter-spacing: -.025em;
}
.modal-desc {
    font-size: 13px;
    color: var(--text3);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}
.modal-desc strong { color: var(--text2); }

.modal-btn {
    width: 100%;
    border: none;
    border-radius: var(--r-lg);
    padding: .875rem;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all .2s;
    font-family: var(--font-ui);
}
.modal-btn.primary {
    background: var(--accent-grad);
    color: #fff;
    box-shadow: var(--shadow-accent);
}
.modal-btn.primary:hover:not(:disabled) {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: var(--shadow-accent-lg);
}
.modal-btn.primary:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* ══════════════════════════════════════════
   FOOTER
══════════════════════════════════════════ */
.footer {
    padding: var(--space-16) var(--space-6) var(--space-8);
    background: var(--bg2);
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
}
.footer-inner   { max-width: 1100px; margin: 0 auto; }
.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer-brand-desc {
    font-size: .875rem;
    color: var(--text2);
    line-height: 1.7;
    margin-top: .75rem;
    max-width: 300px;
}
.footer-col-title {
    font-size: var(--text-xs);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--text3);
    margin-bottom: 1rem;
}
.footer-col-links { display: flex; flex-direction: column; gap: .625rem; }
.footer-col-link  { font-size: .875rem; color: var(--text2); text-decoration: none; transition: color .15s; }
.footer-col-link:hover { color: var(--cyan); }
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    font-size: .8rem;
    color: var(--text3);
    flex-wrap: wrap;
    gap: .5rem;
}

/* ══════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════ */
@media (max-width: 900px) {
    .problem-grid, .steps-grid, .insights-grid, .security-grid { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr 1fr; }
    .steps-grid::before { display: none; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-mobile-toggle { display: flex; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%; left: 0; right: 0;
        background: rgba(8,10,13,.97);
        border-bottom: 1px solid var(--border);
        padding: 1rem 1.5rem;
        gap: 1rem;
    }
    .footer-top { grid-template-columns: 1fr; gap: 2rem; }
}