:root {
    --c-primary: #3b82f6;
    --c-secondary: #fbbf24;
    --c-accent: #f43f5e;
    --c-border: #1d1d1f;
    --c-bg: #fffdf7;
    --c-surface: #ffffff;

    --border-width: 3px;
    --hard-shadow: 6px 6px 0px var(--c-border);
    --hard-shadow-sm: 4px 4px 0px var(--c-border);
    --hard-shadow-active: 1px 1px 0px var(--c-border);

    --font-main: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-main);
    background-color: var(--c-bg);
    background-image:
        linear-gradient(var(--c-border) 1.5px, transparent 1.5px),
        linear-gradient(90deg, var(--c-border) 1.5px, transparent 1.5px);
    background-size: 40px 40px;
    background-position: center top;
    color: var(--c-border);
    height: 100vh;
    height: 100svh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    transition: background-color 0.5s ease;
}

/* Background States */
body.state-work {
    background-color: #ffdce3;
}

body.state-rest {
    background-color: #dcfce7;
}

#emoji-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.sticker {
    position: absolute;
    font-size: 2.5rem;
    user-select: none;
    transform: translate(-50%, -50%) rotate(var(--rotation));
    animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 0;
}

@keyframes popIn {
    0% {
        transform: translate(-50%, -50%) scale(0) rotate(0);
    }

    100% {
        transform: translate(-50%, -50%) scale(1) rotate(var(--rotation));
    }
}

.container {
    width: 100%;
    max-width: 440px;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 10;
}

.navbar-container {
    padding: 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-box {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-width) solid var(--c-border);
    padding: 0.8rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--hard-shadow-sm);
}

.logo-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo {
    font-size: 1.1rem;
    font-weight: 900;
    letter-spacing: -0.5px;
    line-height: 1;
}

.logo-en {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--c-border);
    opacity: 0.7;
    text-transform: uppercase;
}

.nav-actions {
    display: flex;
    gap: 0.8rem;
    align-items: center;
}

.icon-btn {
    background: var(--c-secondary);
    border: var(--border-width) solid var(--c-border);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--hard-shadow-sm);
    transition: all 0.1s;
    font-family: var(--font-mono);
    font-weight: 900;
}

.icon-btn.sm {
    width: 38px;
    height: 38px;
    font-size: 0.8rem;
}

.icon-btn:active {
    transform: translate(2px, 2px);
    box-shadow: var(--hard-shadow-active);
}

.timer-display {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
}

.card {
    background: var(--c-surface);
    border: var(--border-width) solid var(--c-border);
    padding: 3rem 2rem;
    width: 100%;
    text-align: center;
    box-shadow: var(--hard-shadow);
    border-radius: 4px;
    /* Maintain brutalist look with small radius */
}

.status-label {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--c-accent);
}

.timer {
    font-family: var(--font-mono);
    font-size: clamp(4rem, 15vw, 6rem);
    font-weight: 900;
    margin: 1.5rem 0;
    line-height: 1;
}

.counter {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    background: var(--c-border);
    color: white;
    display: inline-block;
    padding: 0.2rem 0.8rem;
    border-radius: 4px;
}

.controls {
    padding: 2rem;
    display: flex;
    justify-content: center;
}

.main-fab {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    border: var(--border-width) solid var(--c-border);
    background: var(--c-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--hard-shadow);
    transition: all 0.1s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.main-fab:active {
    transform: translate(3px, 3px);
    box-shadow: var(--hard-shadow-active);
}

/* Settings Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(29, 29, 31, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

.settings-content {
    background: var(--c-bg);
    border: var(--border-width) solid var(--c-border);
    padding: 2.5rem;
    width: 90%;
    max-width: 360px;
    box-shadow: 12px 12px 0px var(--c-border);
    text-align: center;
}

.settings-content h2 {
    font-weight: 900;
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.setting-item {
    margin-bottom: 1.5rem;
    text-align: left;
}

.setting-item label {
    display: block;
    font-weight: 800;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.setting-item input {
    width: 100%;
    border: var(--border-width) solid var(--c-border);
    padding: 1rem;
    font-size: 1.2rem;
    font-family: var(--font-mono);
    outline: none;
    box-shadow: inset 2px 2px 0px rgba(0, 0, 0, 0.1);
}

.setting-item.inline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.setting-row {
    display: flex;
    gap: 0.5rem;
}

.btn-toggle {
    min-width: 60px;
    background: var(--c-primary);
    color: white;
}

.btn-toggle.off {
    background: #e2e8f0;
    color: #64748b;
}

.primary-btn {
    width: 100%;
    padding: 1.2rem;
    border: var(--border-width) solid var(--c-border);
    background: var(--c-accent);
    color: white;
    font-size: 1.1rem;
    font-weight: 900;
    cursor: pointer;
    box-shadow: var(--hard-shadow-sm);
    margin-top: 1rem;
}

.primary-btn:active {
    transform: translate(2px, 2px);
    box-shadow: var(--hard-shadow-active);
}

/* Specific state colors */
.state-work .status-label {
    color: var(--c-accent);
}

.state-work .main-fab {
    background: var(--c-accent);
}

.state-rest .status-label {
    color: var(--c-primary);
}

.state-rest .main-fab {
    background: var(--c-primary);
}

.state-idle .main-fab {
    background: var(--c-primary);
}