/* ═══════════════════════════════════════════════
   ST-SoftwareTool  —  Classic Theme Website
   ═══════════════════════════════════════════════ */

:root {
    --gray:       #c0c0c0;
    --dark-gray:  #808080;
    --black:      #000000;
    --white:      #ffffff;
    --blue:       #000080;
    --blue-mid:   #0a24a0;
    --blue-light: #1084d0;
    --teal:       #008080;

    --term-bg:      #000080;
    --term-bg2:     #00006a;
    --term-border:  #c0c0c0;
    --term-text:    #c0c0c0;
    --term-prompt:  #ffff00;
    --term-success: #00ff00;
    --term-info:    #00ffff;
    --term-error:   #ff6666;
    --term-warn:    #ffff00;
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--teal);
    font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
    font-size: 14px;
    color: var(--black);
    min-height: 100vh;
    padding-bottom: 40px;
}

/* ── Win95 3-D helpers ─────────────────────────── */
.raised {
    border-top:    2px solid var(--white);
    border-left:   2px solid var(--white);
    border-right:  2px solid var(--dark-gray);
    border-bottom: 2px solid var(--dark-gray);
    outline: 1px solid var(--black);
}
.sunken {
    border-top:    2px solid var(--dark-gray);
    border-left:   2px solid var(--dark-gray);
    border-right:  2px solid var(--white);
    border-bottom: 2px solid var(--white);
}

/* ── Window chrome ─────────────────────────────── */
.window {
    background: var(--gray);
    border-top:    2px solid var(--white);
    border-left:   2px solid var(--white);
    border-right:  2px solid var(--black);
    border-bottom: 2px solid var(--black);
    outline: 1px solid var(--dark-gray);
    outline-offset: 1px;
}

.title-bar {
    background: linear-gradient(90deg, var(--blue) 0%, var(--blue-light) 100%);
    color: var(--white);
    font-weight: bold;
    font-size: 13px;
    padding: 3px 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    gap: 6px;
}
.title-bar-left {
    display: flex;
    align-items: center;
    gap: 5px;
}
.title-icon {
    width: 16px;
    height: 16px;
    object-fit: contain;
}
.title-bar-btns {
    display: flex;
    gap: 2px;
    flex-shrink: 0;
}
.tb-btn {
    width: 18px;
    height: 16px;
    background: var(--gray);
    border-top: 1px solid var(--white);
    border-left: 1px solid var(--white);
    border-right: 1px solid var(--black);
    border-bottom: 1px solid var(--black);
    font-size: 10px;
    line-height: 1;
    cursor: default;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--black);
    font-weight: bold;
}

/* ── Navigation / Menu bar ─────────────────────── */
.nav-menu {
    background: var(--gray);
    border-bottom: 1px solid var(--dark-gray);
    display: flex;
    align-items: center;
    padding: 2px 4px;
    gap: 0;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-menu a {
    padding: 3px 10px;
    color: var(--black);
    text-decoration: none;
    font-size: 13px;
    white-space: nowrap;
}
.nav-menu a:hover {
    background: var(--blue);
    color: var(--white);
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 2px 10px 2px 6px;
    border-right: 1px solid var(--dark-gray);
    margin-right: 4px;
    font-weight: bold;
    font-size: 13px;
    color: var(--black);
}
.nav-logo img {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

/* ── Win95 Buttons ─────────────────────────────── */
.btn {
    background: var(--gray);
    color: var(--black);
    border-top:    2px solid var(--white);
    border-left:   2px solid var(--white);
    border-right:  2px solid var(--dark-gray);
    border-bottom: 2px solid var(--dark-gray);
    outline: 1px solid var(--black);
    padding: 5px 20px;
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    min-width: 80px;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}
.btn:active {
    border-top:    2px solid var(--dark-gray);
    border-left:   2px solid var(--dark-gray);
    border-right:  2px solid var(--white);
    border-bottom: 2px solid var(--white);
    padding: 6px 19px 4px 21px;
}
.btn:hover { background: #d4d4d4; }
.btn-primary {
    background: var(--blue);
    color: var(--white);
    border-top:    2px solid var(--blue-light);
    border-left:   2px solid var(--blue-light);
    border-right:  2px solid var(--black);
    border-bottom: 2px solid var(--black);
}
.btn-primary:hover { background: var(--blue-mid); }

/* ── Terminal block ────────────────────────────── */
.terminal {
    background: var(--term-bg);
    color: var(--term-text);
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    padding: 14px 18px;
    border-top:    2px solid var(--dark-gray);
    border-left:   2px solid var(--dark-gray);
    border-right:  2px solid var(--white);
    border-bottom: 2px solid var(--white);
}
.terminal .t-prompt  { color: var(--term-prompt); }
.terminal .t-success { color: var(--term-success); }
.terminal .t-info    { color: var(--term-info); }
.terminal .t-error   { color: var(--term-error); }
.terminal .t-warn    { color: var(--term-warn); }
.terminal .t-dim     { color: #6080c0; }
.terminal .t-cmd     { color: #ffffff; }

.term-input-row {
    display: flex;
    align-items: center;
    margin-top: 4px;
}
.cursor {
    display: inline-block;
    width: 8px;
    height: 14px;
    background: var(--term-prompt);
    animation: blink 1s step-end infinite;
    vertical-align: middle;
    margin-left: 1px;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* ── GroupBox (Win95 panel) ────────────────────── */
.group-box {
    border-top:    1px solid var(--dark-gray);
    border-left:   1px solid var(--dark-gray);
    border-right:  1px solid var(--white);
    border-bottom: 1px solid var(--white);
    outline: 1px solid var(--gray);
    padding: 18px 14px 14px;
    margin-top: 10px;
    position: relative;
}
.group-box-title {
    position: absolute;
    top: -9px;
    left: 10px;
    background: var(--gray);
    padding: 0 5px;
    font-weight: bold;
    font-size: 13px;
}

/* ── Progress bar ──────────────────────────────── */
.progress-wrap {
    border-top:    2px solid var(--dark-gray);
    border-left:   2px solid var(--dark-gray);
    border-right:  2px solid var(--white);
    border-bottom: 2px solid var(--white);
    background: var(--white);
    height: 20px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--blue);
    background: repeating-linear-gradient(
        90deg,
        var(--blue) 0px,
        var(--blue) 10px,
        var(--blue-light) 10px,
        var(--blue-light) 20px
    );
    transition: width 1.5s ease;
}

/* ── Status bar ────────────────────────────────── */
.status-bar {
    display: flex;
    gap: 2px;
    padding: 3px 4px;
    border-top: 1px solid var(--dark-gray);
    background: var(--gray);
}
.status-panel {
    border-top:    1px solid var(--dark-gray);
    border-left:   1px solid var(--dark-gray);
    border-right:  1px solid var(--white);
    border-bottom: 1px solid var(--white);
    padding: 1px 8px;
    font-size: 12px;
    color: var(--black);
}

/* ── Taskbar ───────────────────────────────────── */
.taskbar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 32px;
    background: var(--gray);
    border-top: 2px solid var(--white);
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 4px;
    z-index: 999;
}
.start-btn {
    background: var(--gray);
    border-top:    2px solid var(--white);
    border-left:   2px solid var(--white);
    border-right:  2px solid var(--dark-gray);
    border-bottom: 2px solid var(--dark-gray);
    outline: 1px solid var(--black);
    padding: 2px 8px 2px 4px;
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    font-weight: bold;
    font-size: 13px;
    font-family: inherit;
    height: 24px;
}
.start-btn img { width: 16px; height: 16px; object-fit: contain; }
.start-btn:active {
    border-top:    2px solid var(--dark-gray);
    border-left:   2px solid var(--dark-gray);
    border-right:  2px solid var(--white);
    border-bottom: 2px solid var(--white);
}
.taskbar-divider {
    width: 1px;
    height: 22px;
    background: var(--dark-gray);
    margin: 0 3px;
    box-shadow: 1px 0 0 var(--white);
}
.taskbar-item {
    background: var(--gray);
    border-top:    2px solid var(--white);
    border-left:   2px solid var(--white);
    border-right:  2px solid var(--dark-gray);
    border-bottom: 2px solid var(--dark-gray);
    height: 24px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    cursor: default;
    min-width: 120px;
}
.taskbar-item.active {
    border-top:    2px solid var(--dark-gray);
    border-left:   2px solid var(--dark-gray);
    border-right:  2px solid var(--white);
    border-bottom: 2px solid var(--white);
    background: repeating-linear-gradient(
        45deg,
        var(--gray) 0px 2px,
        #b0b0b0 2px 4px
    );
}
.taskbar-item img { width: 14px; height: 14px; object-fit: contain; }
.taskbar-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0;
}
.taskbar-clock {
    border-top:    1px solid var(--dark-gray);
    border-left:   1px solid var(--dark-gray);
    border-right:  1px solid var(--white);
    border-bottom: 1px solid var(--white);
    padding: 2px 10px;
    font-size: 12px;
    font-family: 'Segoe UI', Tahoma, monospace;
    min-width: 70px;
    text-align: center;
    height: 24px;
    display: flex;
    align-items: center;
}

/* ══════════════════════════════════════════════
   LAYOUT
   ══════════════════════════════════════════════ */

.desktop {
    max-width: 1180px;
    margin: 0 auto;
    padding: 14px 14px 50px;
}

/* Main window wrapping entire page */
.main-window {
    display: flex;
    flex-direction: column;
}

/* Sections share a window appearance */
section {
    padding: 28px 28px;
    background: var(--gray);
}
section + section {
    border-top: 1px solid var(--dark-gray);
}

/* ── Hero ──────────────────────────────────────── */
#hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
    background: var(--gray);
    min-height: 400px;
}
.hero-terminal-wrap { display: flex; flex-direction: column; gap: 0; }
.hero-terminal-wrap .title-bar { font-size: 12px; }
.hero-terminal { min-height: 300px; }

.hero-desc {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 8px;
}
.hero-desc h1 {
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 1px;
}
.hero-desc .tagline {
    color: var(--dark-gray);
    font-size: 13px;
    font-style: italic;
    margin-top: -10px;
}
.hero-desc p {
    font-size: 13px;
    line-height: 1.7;
    color: #111;
}
.hero-desc .btn-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ── Features ──────────────────────────────────── */
#features { background: var(--gray); }
#features h2 { font-size: 16px; font-weight: bold; margin-bottom: 20px; }

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}
.feature-card {
    background: var(--gray);
    padding: 14px 16px;
}
.feature-card h3 {
    font-size: 13px;
    font-weight: bold;
    margin-bottom: 10px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--dark-gray);
}
.feature-card p {
    font-size: 12px;
    line-height: 1.7;
    color: #222;
}
.feature-card ul {
    list-style: none;
    margin-top: 8px;
    font-size: 12px;
}
.feature-card ul li::before { content: "• "; color: var(--blue); font-weight: bold; }
.feature-card ul li { padding: 1px 0; }

/* ── Commands ──────────────────────────────────── */
#commands { background: var(--gray); }
#commands h2 { font-size: 16px; font-weight: bold; margin-bottom: 20px; }

.commands-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.cmd-window { display: flex; flex-direction: column; }
.cmd-terminal { flex: 1; font-size: 12px; min-height: 260px; }

.cmd-table {
    border-collapse: collapse;
    width: 100%;
    font-size: 12px;
}
.cmd-table th {
    background: var(--blue);
    color: var(--white);
    padding: 4px 10px;
    text-align: left;
    font-weight: bold;
    border: 1px solid var(--dark-gray);
}
.cmd-table td {
    padding: 3px 10px;
    border: 1px solid var(--dark-gray);
    vertical-align: top;
}
.cmd-table tr:nth-child(even) td { background: #b8b8b8; }
.cmd-code { color: var(--blue); font-family: 'Consolas','Courier New',monospace; font-weight: bold; }

/* ── Performance / Monitor ─────────────────────── */
#monitor { background: var(--gray); }
#monitor h2 { font-size: 16px; font-weight: bold; margin-bottom: 20px; }

.monitor-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.monitor-card {
    background: var(--gray);
    padding: 12px 14px;
}
.monitor-card h4 { font-size: 12px; font-weight: bold; margin-bottom: 8px; color: var(--blue); }
.monitor-label { font-size: 11px; margin-bottom: 3px; }
.monitor-value { font-size: 11px; color: var(--dark-gray); }

/* ── Download ──────────────────────────────────── */
#download { background: var(--gray); }
.download-inner {
    display: flex;
    gap: 28px;
    align-items: flex-start;
    flex-wrap: wrap;
}
.download-box {
    min-width: 280px;
    padding: 18px 20px;
}
.download-box h3 { font-size: 14px; font-weight: bold; margin-bottom: 10px; }
.download-box p { font-size: 12px; margin-bottom: 14px; line-height: 1.7; }

.req-list {
    font-size: 12px;
    list-style: none;
    line-height: 2;
}
.req-list li::before { content: "✓  "; color: #006000; font-weight: bold; }

/* ── About ─────────────────────────────────────── */
#about { background: var(--gray); }
.about-inner { display: flex; gap: 28px; align-items: flex-start; flex-wrap: wrap; }
.about-logo-box { text-align: center; padding: 14px; min-width: 160px; }
.about-logo-box img { width: 96px; height: 96px; object-fit: contain; display: block; margin: 0 auto 10px; }
.about-logo-box h2 { font-size: 14px; font-weight: bold; }
.about-logo-box p { font-size: 11px; color: var(--dark-gray); }
.about-text { flex: 1; min-width: 240px; }
.about-text h3 { font-size: 13px; font-weight: bold; margin-bottom: 6px; }
.about-text p { font-size: 12px; line-height: 1.8; color: #222; margin-bottom: 10px; }

/* ── Scrollbar Win95 ───────────────────────────── */
::-webkit-scrollbar { width: 16px; }
::-webkit-scrollbar-track { background: var(--gray); }
::-webkit-scrollbar-thumb {
    background: var(--gray);
    border-top:    2px solid var(--white);
    border-left:   2px solid var(--white);
    border-right:  2px solid var(--dark-gray);
    border-bottom: 2px solid var(--dark-gray);
}
::-webkit-scrollbar-button {
    background: var(--gray);
    border-top:    2px solid var(--white);
    border-left:   2px solid var(--white);
    border-right:  2px solid var(--dark-gray);
    border-bottom: 2px solid var(--dark-gray);
    height: 16px;
    display: block;
}