/* ===== CSS Variables - Neo Brutalism ===== */
:root {
    --black: #0a0a0a;
    --black-light: #1a1a1a;
    --black-lighter: #252525;
    --red-dark: #8B0000;
    --red: #B22222;
    --red-bright: #DC143C;
    --gold: #D4AF37;
    --gold-light: #F4D03F;
    --white: #FAFAFA;
    --gray: #888888;
    --gray-dark: #444444;
    --accent: #D4AF37;

    --border-width: 4px;
    --shadow-offset: 6px;
    --shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--black);
    --shadow-gold: var(--shadow-offset) var(--shadow-offset) 0 var(--gold);

    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --container-width: 900px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { text-decoration: none; color: inherit; }
.text-accent { color: var(--accent); }
.text-gold { color: var(--gold); }
.hidden { display: none !important; }

/* ===== Container ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: var(--black);
    border-bottom: var(--border-width) solid var(--white);
    padding: 16px 0;
}

.header .container {
    max-width: 1400px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo { display: flex; align-items: center; }

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.nav-link {
    padding: 10px 20px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: var(--border-width) solid transparent;
    transition: all 0.15s ease;
}

.nav-link:hover {
    background: var(--white);
    color: var(--black);
    border-color: var(--white);
}

/* ===== Main ===== */
.main {
    flex: 1;
    padding: 120px 0 60px;
}

/* ===== Page Header ===== */
.page-header {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 40px;
}

.page-icon {
    width: 80px;
    height: 80px;
    background: var(--red-dark);
    border: var(--border-width) solid var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 4px 4px 0 var(--gold);
    flex-shrink: 0;
}

.page-icon svg {
    width: 40px;
    height: 40px;
    color: var(--white);
}

.page-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 8px;
}

.page-description {
    color: var(--gray);
    font-size: 1.1rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: var(--border-width) solid var(--white);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn svg { width: 18px; height: 18px; }

.btn-primary {
    background: var(--red-dark);
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-primary:active {
    background: var(--red);
    box-shadow: 2px 2px 0 var(--black);
    transform: translate(4px, 4px);
}

.btn-primary:hover {
    transform: translate(-2px, -2px);
    box-shadow: 8px 8px 0 var(--gold);
}

.btn-secondary {
    background: var(--black-light);
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-secondary:active {
    box-shadow: 2px 2px 0 var(--black);
    transform: translate(4px, 4px);
}

.btn-secondary:hover {
    background: var(--black-lighter);
    transform: translate(-2px, -2px);
    box-shadow: 8px 8px 0 var(--gold);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

.btn-lg svg { width: 22px; height: 22px; }

/* ===== Mode Switcher ===== */
.mode-switcher {
    display: flex;
    gap: 0;
    margin-bottom: 32px;
}

.mode-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 24px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: var(--border-width) solid var(--white);
    background: var(--black-light);
    color: var(--gray);
    cursor: pointer;
    transition: all 0.15s ease;
}

.mode-btn:first-child { border-right: none; }

.mode-btn svg { width: 22px; height: 22px; }

.mode-btn.active {
    background: var(--red-dark);
    color: var(--white);
    box-shadow: var(--shadow);
}

.mode-btn:not(.active):hover {
    background: var(--black-lighter);
    color: var(--white);
}

/* ===== Notification Banner ===== */
.notification-banner {
    background: var(--black-light);
    border: var(--border-width) solid var(--gold);
    padding: 16px 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 4px 4px 0 var(--gold);
}

.notification-banner svg {
    width: 24px;
    height: 24px;
    color: var(--gold);
    flex-shrink: 0;
}

.notification-banner span {
    flex: 1;
    font-size: 0.9rem;
    color: var(--gray);
}

/* ===== Timer Panel ===== */
.timer-panel {
    background: var(--black-light);
    border: var(--border-width) solid var(--white);
    padding: 48px 32px;
    box-shadow: var(--shadow);
    text-align: center;
}

/* ===== Display ===== */
.display-container {
    margin-bottom: 40px;
}

.time-display {
    font-family: var(--font-mono);
    font-size: 6rem;
    font-weight: 700;
    letter-spacing: 4px;
    line-height: 1;
}

.time-ms {
    font-family: var(--font-mono);
    font-size: 2rem;
    color: var(--gray);
    margin-top: 4px;
}

/* ===== Timer Actions ===== */
.timer-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===== Laps ===== */
.laps-panel {
    margin-top: 40px;
    text-align: left;
}

.laps-header {
    border-bottom: 2px solid var(--gray-dark);
    padding-bottom: 12px;
    margin-bottom: 12px;
}

.laps-header h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.laps-list {
    max-height: 300px;
    overflow-y: auto;
}

.lap-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    border-bottom: 1px solid var(--gray-dark);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.lap-item:nth-child(odd) {
    background: rgba(255, 255, 255, 0.02);
}

.lap-number {
    color: var(--gold);
    font-weight: 600;
}

.lap-time {
    color: var(--gray);
}

.lap-diff {
    color: var(--white);
    font-weight: 600;
}

/* ===== Timer Setup ===== */
.time-inputs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
}

.time-input-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.time-input-group label {
    font-family: var(--font-display);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray);
}

.time-input {
    width: 120px;
    padding: 16px;
    background: var(--black);
    border: var(--border-width) solid var(--white);
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    -moz-appearance: textfield;
}

.time-input::-webkit-outer-spin-button,
.time-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.time-input:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 4px 4px 0 var(--gold);
}

.time-separator {
    font-family: var(--font-mono);
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray);
    padding-top: 20px;
}

/* ===== Quick Presets ===== */
.quick-presets {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.preset-btn {
    padding: 10px 18px;
    background: var(--black);
    border: 2px solid var(--gray-dark);
    color: var(--gray);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.preset-btn:hover {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(212, 175, 55, 0.1);
}

/* ===== Progress Ring ===== */
.progress-ring-container {
    display: flex;
    justify-content: center;
    margin-bottom: 32px;
}

.progress-ring {
    width: 200px;
    height: 200px;
    transform: rotate(-90deg);
}

.progress-ring-bg {
    fill: none;
    stroke: var(--gray-dark);
    stroke-width: 8;
}

.progress-ring-fill {
    fill: none;
    stroke: var(--gold);
    stroke-width: 8;
    stroke-linecap: square;
    stroke-dasharray: 565.48;
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 0.5s linear;
}

/* ===== Finished ===== */
.finished-pulse {
    animation: pulse 1s ease-in-out infinite alternate;
}

@keyframes pulse {
    from { opacity: 1; }
    to { opacity: 0.5; }
}

.finished-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gold);
    margin-top: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== Footer ===== */
.footer {
    background: var(--red-dark);
    border-top: var(--border-width) solid var(--white);
    padding: 30px 0;
    margin-top: auto;
}

.footer .container {
    max-width: 1400px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    height: 36px;
    width: auto;
    object-fit: contain;
}

.footer-copy {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--gray-dark); border: 2px solid var(--black); }
::-webkit-scrollbar-thumb:hover { background: var(--gray); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .page-header {
        flex-direction: column;
        text-align: center;
    }

    .page-title { font-size: 2rem; }

    .mode-switcher { flex-direction: column; }
    .mode-btn:first-child { border-right: var(--border-width) solid var(--white); border-bottom: none; }

    .time-display { font-size: 3.5rem; }
    .time-ms { font-size: 1.5rem; }

    .time-input {
        width: 80px;
        font-size: 1.8rem;
        padding: 12px;
    }

    .time-separator { font-size: 2rem; }

    .timer-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .btn { justify-content: center; }

    .notification-banner {
        flex-direction: column;
        text-align: center;
    }
}