/* ========================================
   LAYOUT & SIDEBAR
   ======================================== */

.biggest-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--spacing-md);
}

.big-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
}

.container {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-inline: auto;
    width: 40%;
    margin: var(--spacing-md);
}
.container>a>img {
    display: block;
    margin-inline: auto;
    margin-bottom: var(--spacing-md);
    width: 90%;
    border-radius: var(--border-radius);
    opacity: 0.9;
    transition: opacity var(--transition-speed), transform var(--transition-speed);
}
.container>a>img:hover {
    opacity: 1;
    transform: scale(1.01);
}

.header {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

canvas {
    z-index: var(--z-canvas);
    position: fixed;
    top: 0;
    left: 0;
    overflow: hidden;
    width: 100%;
    height: 100%;
    margin: 0;
    border-radius: 0;
}

#scroll-indicator-bg {
    position: fixed;
    top: 0;
    left: 0;
    height: var(--scroll-indicator-height);
    width: 100%;
    background: var(--card-bg);
    z-index: var(--z-scroll-bg);
    border-radius: 0;
}

#scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    height: var(--scroll-indicator-height);
    width: 0;
    background: var(--accent-color);
    z-index: var(--z-scroll-fill);
    transition: width var(--transition-speed) cubic-bezier(0.4, 1.3, 0.6, 1), background var(--transition-speed);
    pointer-events: none;
    border-radius: 0;
}

/* Title Container */
.title-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) auto var(--spacing-2xl);
    padding: var(--spacing-lg) 2.5rem;
    max-width: var(--title-max-width);
    background: color-mix(in srgb, var(--card-bg) 40%, transparent);
    backdrop-filter: blur(var(--backdrop-blur-strong));
    -webkit-backdrop-filter: blur(var(--backdrop-blur-strong));
    border-radius: var(--title-container-radius);
    box-shadow: var(--box-shadow-glass);
    border: 1px solid color-mix(in srgb, var(--border-color) 40%, transparent);
    animation: fadeInUp 1s cubic-bezier(0.34, 1.56, 0.64, 1);
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}
.main-title {
    font-size: clamp(var(--font-size-2xl), 5vw, 3.5rem);
    font-weight: 800;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    line-height: 1;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s cubic-bezier(0.34, 1.56, 0.64, 1);
    letter-spacing: -0.02em;
}
.header-info-wrapper {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    text-align: right;
}
.time-display {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-3xl));
    font-weight: 800;
    color: var(--text-color);
    background: transparent;
    padding: 0;
    border: none;
    box-shadow: none;
    transition: all var(--transition-speed);
    line-height: 0.9;
    letter-spacing: -0.03em;
    min-width: auto;
    font-variant-numeric: tabular-nums;
}
.time-display:hover {
    background: transparent;
    color: var(--accent-secondary);
    transform: scale(1.02);
    cursor: pointer;
}
.date-display {
    font-size: clamp(var(--font-size-sm), 1.5vw, 1.1rem);
    color: var(--accent-color);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-xs);
    opacity: 0.9;
    letter-spacing: 0.02em;
    text-transform: capitalize;
}

[data-theme="dark"] .title-container,
[data-theme="space"] .title-container,
[data-theme="midnight"] .title-container {
    background: color-mix(in srgb, var(--card-bg) 40%, transparent);
    border-color: color-mix(in srgb, var(--border-color) 40%, transparent);
}
[data-theme="dark"] .time-display,
[data-theme="space"] .time-display,
[data-theme="midnight"] .time-display {
    background: color-mix(in srgb, var(--highlight-color) 50%, transparent);
}

/* Side Menu (Desktop) */
.side-menu {
    position: fixed;
    top: 0;
    left: calc(-1 * (var(--side-menu-width) + 10px));
    width: var(--side-menu-width);
    height: 100%;
    background: var(--card-bg);
    box-shadow: var(--shadow-side-menu);
    border-radius: 0 0 var(--border-radius) 0;
    padding: var(--spacing-md);
    transition: left var(--transition-speed) ease;
    z-index: var(--z-side-menu);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}
.side-menu.open {
    left: 0;
}

.menu-toggle {
    position: fixed;
    top: var(--spacing-md) !important;
    left: 4rem !important;
    width: var(--menu-toggle-size);
    height: var(--menu-toggle-size);
    background: var(--card-bg);
    border: none;
    border-radius: var(--border-radius) !important;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: var(--z-menu-toggle) !important;
    box-shadow: var(--box-shadow-md);
    transition: all var(--transition-speed) cubic-bezier(0.175, 0.885, 0.32, 1.275);
    outline: none;
    -webkit-tap-highlight-color: transparent;
    animation: buttonFadeIn 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.menu-toggle:hover {
    background: var(--highlight-color);
}
.menu-toggle:active {
    transform: scale(0.9);
}

/* Hamburger Animation */
.hamburger {
    width: var(--hamburger-width);
    height: var(--hamburger-height);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.hamburger span {
    display: block;
    width: 100%;
    height: var(--hamburger-line);
    background: var(--accent-color);
    border-radius: var(--border-radius-xs);
    transition: all 0.4s cubic-bezier(0.68, -0.6, 0.32, 1.6);
    transform-origin: center;
}
.menu-toggle.open {
    left: 13.5rem !important;
    background: var(--card-bg);
    border: 0;
    box-shadow: none;
    z-index: var(--z-menu-toggle-open) !important;
}
.menu-toggle.open .hamburger span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
    background: var(--accent-color);
}
.menu-toggle.open .hamburger span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}
.menu-toggle.open .hamburger span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
    background: var(--accent-color);
}

.menu-title {
    font-size: var(--font-size-2xl);
    color: var(--accent-color);
    text-align: center;
    margin: var(--spacing-md);
    font-weight: var(--font-weight-bold);
    animation: fadeInDown 900ms ease;
    animation-fill-mode: both;
}

.menu-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-family);
    cursor: pointer;
    transition: background var(--transition-speed) ease, transform var(--transition-speed) ease;
    height: var(--menu-btn-height);
}
.menu-btn i {
    font-size: var(--font-size-lg);
    color: var(--accent-color);
}
.menu-btn span {
    flex: 1;
    text-align: left;
}
.menu-btn:hover {
    background: var(--highlight-color);
}

/* Recommended Manual in Sidebar */
.recommended-manual {
    margin-top: auto;
    padding: var(--spacing-md);
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-md);
    text-align: center;
}
.recommended-manual h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
}
.recommended-manual .manual-card {
    background: var(--highlight-color);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    text-align: left;
}
.recommended-manual img {
    width: 100%;
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-sm);
}
.recommended-manual p {
    margin: 0;
    font-weight: var(--font-weight-semibold);
    color: var(--text-color);
}