/* ============================================================
   NT Rent — pagrindinis CSS
   Etapas 3: auth + public puslapiai
   Etapas 4: papildys sidebar, header, pilna app tema
   ============================================================ */

/* ---- Kintamieji ---- */
:root {
    --color-primary:    #5a7a3a;
    --color-primary-h:  #435c2a;
    --color-success:    #16a34a;
    --color-danger:     #dc2626;
    --color-warning:    #d97706;
    --color-info:       #0891b2;
    --color-text:       #1e293b;
    --color-muted:      #64748b;
    --color-border:     #e2e8f0;
    --color-bg:         #f8fafc;
    --color-white:      #ffffff;
    --color-card:       #ffffff;

    --radius:           8px;
    --radius-sm:        4px;
    --shadow:           0 1px 4px rgba(0,0,0,.08);
    --shadow-md:        0 4px 16px rgba(0,0,0,.10);

    --font:             -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono:        'Courier New', Courier, monospace;
}

/* ============================================================
   Spalvų temos (data-theme atributas ant <html>)
   ============================================================ */
[data-theme="blue"] {
    --color-primary:      #1d6fa4;
    --color-primary-h:    #155e8a;
}
[data-theme="slate"] {
    --color-primary:      #475569;
    --color-primary-h:    #334155;
}
[data-theme="purple"] {
    --color-primary:      #6d28d9;
    --color-primary-h:    #5b21b6;
}
[data-theme="amber"] {
    --color-primary:      #b45309;
    --color-primary-h:    #92400e;
}

/* ---- Reset / Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
    font-family: var(--font);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 600; }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.125rem; }

p { margin-bottom: .75rem; }
p:last-child { margin-bottom: 0; }

/* ---- Alert pranesimai ---- */
.alert {
    padding: .75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: .9375rem;
    border-left: 4px solid transparent;
}
.alert-success { background: #dcfce7; border-color: var(--color-success); color: #166534; }
.alert-danger  { background: #fee2e2; border-color: var(--color-danger);  color: #991b1b; }
.alert-warning { background: #fef3c7; border-color: var(--color-warning); color: #92400e; }
.alert-info    { background: #e0f2fe; border-color: var(--color-info);    color: #0c4a6e; }

/* ---- Mygtukai ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    padding: .55rem 1.25rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: 1.5px solid var(--color-primary);
    -webkit-appearance: none;
    appearance: none;
    line-height: 1.2;
    box-sizing: border-box;
    border-radius: var(--radius-sm);
    font-size: .9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: background .15s, border-color .15s;
    white-space: nowrap;
    text-decoration: none;
}
.btn:hover { background: var(--color-primary-h); border-color: var(--color-primary-h); text-decoration: none; color: var(--color-white); }

.btn-outline {
    background: transparent;
    color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: var(--color-white); }

.btn-sm { padding: 0 .85rem; font-size: .875rem; height: 2.125rem; }
.btn-lg { padding: .75rem 1.75rem; font-size: 1.0625rem; }

.btn-block { width: 100%; }

/* Ikona be teksto — kvadratinis mygtukas */
.btn-icon { padding: .35rem .5rem; min-width: 2rem; }

.btn-primary   { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-h); border-color: var(--color-primary-h); color: #fff; }

.btn-secondary { background: var(--color-white); border-color: var(--color-border); color: var(--color-text); }
.btn-secondary:hover { background: var(--color-bg); color: var(--color-text); }

.btn-success   { background: var(--color-success); border-color: var(--color-success); color: #fff; }
.btn-success:hover { background: #15803d; border-color: #15803d; color: #fff; }

.btn-danger    { background: var(--color-danger); border-color: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; border-color: #b91c1c; color: #fff; }

.btn-warning   { background: var(--color-warning); border-color: var(--color-warning); color: #fff; }
.btn-warning:hover { background: #b45309; border-color: #b45309; color: #fff; }

/* Lenteliu ikonu mygtukai: baltas fonas, spalvotas apvadas + ikona */
.btn-icon.btn-primary { background: #fff; color: var(--color-primary); border-color: #a3c48a; }
.btn-icon.btn-primary:hover { background: #f0f7eb; border-color: var(--color-primary); color: var(--color-primary-h); }
.btn-icon.btn-success { background: #fff; color: #16a34a; border-color: #86efac; }
.btn-icon.btn-success:hover { background: #dcfce7; border-color: #4ade80; color: #15803d; }
.btn-icon.btn-danger  { background: #fff; color: #dc2626; border-color: #fca5a5; }
.btn-icon.btn-danger:hover  { background: #fee2e2; border-color: #f87171; color: #b91c1c; }
.btn-icon.btn-warning { background: #fff; color: #d97706; border-color: #fcd34d; }
.btn-icon.btn-warning:hover { background: #fef3c7; border-color: #fbbf24; color: #b45309; }
.btn-icon.btn-secondary { background: #fff; color: var(--color-muted); border-color: var(--color-border); }
.btn-icon.btn-secondary:hover { background: var(--color-bg); color: var(--color-text); border-color: #cbd5e1; }

/* ---- Formos ---- */
.form-group { margin-bottom: 1.125rem; }

.form-label {
    display: block;
    font-size: .9375rem;
    font-weight: 500;
    margin-bottom: .35rem;
    color: var(--color-text);
}

.form-control {
    width: 100%;
    padding: .55rem .75rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: .9375rem;
    font-family: var(--font);
    background: var(--color-white);
    color: var(--color-text);
    transition: border-color .15s, box-shadow .15s;
}
.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(90,122,58,.15);
}
.form-control::placeholder { color: #94a3b8; }

textarea.form-control { resize: vertical; min-height: 100px; }

.form-hint { display: block; font-size: .8125rem; color: var(--color-muted); margin-top: .25rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.form-actions { margin-top: 1.5rem; }

.req { color: var(--color-danger); }

/* ============================================================
   AUTH puslapiai
   ============================================================ */
.auth-body {
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.auth-wrapper {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 2rem;
}

.auth-logo {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    margin-bottom: 1.5rem;
    justify-content: center;
}
.auth-logo:hover { text-decoration: none; }
.auth-logo-icon { font-size: 1.5rem; }

.auth-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: .25rem;
    text-align: center;
}

.auth-subtitle {
    color: var(--color-muted);
    font-size: .9375rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-form { margin-top: 1.25rem; }

.auth-links {
    margin-top: 1.25rem;
    text-align: center;
    font-size: .9rem;
    color: var(--color-muted);
    display: flex;
    justify-content: center;
    gap: .5rem;
    flex-wrap: wrap;
}

.auth-footer {
    margin-top: 1.5rem;
    text-align: center;
    font-size: .8125rem;
    color: var(--color-muted);
}
.auth-footer a { color: var(--color-muted); }
.auth-footer a:hover { color: var(--color-primary); }

/* ============================================================
   PUBLIC puslapiai (home, cms, support)
   ============================================================ */
.pub-header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.pub-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.pub-header .pub-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.pub-logo {
    display: flex;
    align-items: center;
    gap: .4rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}
.pub-logo-icon { font-size: 1.4rem; }

.pub-nav { display: flex; align-items: center; gap: .75rem; }
.pub-lang-wrap { display: flex; align-items: center; }

.pub-main { padding: 3rem 0; min-height: calc(100vh - 120px); }

.pub-footer {
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    padding: 1.25rem 0;
}

.pub-footer .pub-container {
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .75rem;
}

.pub-footer-copy { margin: 0; font-size: .875rem; color: var(--color-muted); }

.pub-footer-nav { display: flex; gap: 1.25rem; flex-wrap: wrap; justify-content: center; }
.pub-footer-nav a { font-size: .875rem; color: var(--color-muted); }
.pub-footer-nav a:hover { color: var(--color-primary); }

/* Kalbos perjungejas */
.lang-switcher {
    display: flex;
    justify-content: center;
    gap: .5rem;
    margin-bottom: 2rem;
}
.lang-btn {
    padding: .25rem .75rem;
    border-radius: 20px;
    border: 1.5px solid var(--color-border);
    font-size: .8125rem;
    font-weight: 600;
    color: var(--color-muted);
    text-decoration: none;
    transition: border-color .15s, color .15s, background .15s;
}
.lang-btn:hover { border-color: var(--color-primary); color: var(--color-primary); text-decoration: none; }
.lang-btn.active { border-color: var(--color-primary); background: var(--sidebar-active-bg); color: var(--color-primary); }

/* Hero sekcija */
.hero {
    text-align: center;
    padding: 4rem 0 3rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--color-muted);
    max-width: 560px;
    margin: 0 auto 2rem;
}

.hero-actions { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* Feature korteles */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.75rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.feature-icon { font-size: 2.5rem; margin-bottom: .75rem; }
.feature-card h3 { margin-bottom: .5rem; }
.feature-card p { color: var(--color-muted); font-size: .9375rem; }

/* CMS puslapis */
.cms-page { max-width: 780px; }
.cms-content { margin-top: 1.5rem; line-height: 1.8; }
.cms-content h2 { margin: 1.5rem 0 .75rem; }
.cms-content p  { margin-bottom: .75rem; }

/* Support puslapis */
.support-page { max-width: 680px; }
.support-page h1 { margin-bottom: .5rem; }

/* ============================================================
   APP stub (Etapas 3 laikinas — bus pakeistas Etape 4)
   ============================================================ */
.app-stub-bar {
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .75rem 1.5rem;
    font-size: .9375rem;
}
.app-stub-bar a { color: var(--color-white); opacity: .9; }
.app-stub-bar a:hover { opacity: 1; }

.app-stub-content {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.stub-page h1 { margin-bottom: .5rem; }
.text-muted { color: var(--color-muted); }

/* Error puslapis */
.error-page {
    text-align: center;
    padding: 4rem 0;
}
.error-page h1 {
    font-size: 5rem;
    font-weight: 800;
    color: var(--color-border);
    margin-bottom: .5rem;
}
.error-page p { color: var(--color-muted); margin-bottom: 1.5rem; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 600px) {
    .hero-title { font-size: 1.75rem; }
    .form-row   { grid-template-columns: 1fr; }
    .auth-card  { padding: 1.5rem; }

    /* Viešas header — mažas ekranas */
    .pub-header .pub-container { height: auto; padding: .6rem 1rem; flex-wrap: wrap; gap: .5rem; }
    .pub-nav { gap: .4rem; flex-wrap: wrap; }
    .pub-nav .btn { font-size: .8125rem; padding: .3rem .7rem; }

    /* Hero sekcija */
    .hero { padding: 2rem 1rem 1.5rem; }
    .hero-desc { font-size: 1rem; }
    .hero-actions { display: none; }

    /* Auth */
    .auth-body { padding: .75rem; }

    /* Footer — mobiliai */
    .pub-footer .pub-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: .5rem;
    }
    .pub-footer-nav {
        justify-content: center;
        gap: .25rem .9rem;  /* mažas tarpas tarp eilučių, normalus tarp elementų */
    }
    .pub-footer-copy {
        font-size: .75rem;
        color: var(--color-muted);
    }
}

@media (max-width: 400px) {
    .pub-logo span { display: none; } /* Tik logotipas, ne tekstas */
}
