:root {
    --bg-focus: #e0f2fe;
    --bg-break: #f0fdf4;
    --accent-focus: #3b82f6;
    --accent-break: #22c55e;
    --glass-bg: rgba(255, 255, 255, 0.4);
    --glass-border: rgba(255, 255, 255, 0.5);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    transition: background-color 1s ease;
}

body.focus-mode {
    background-color: var(--bg-focus);
}

body.break-mode {
    background-color: var(--bg-break);
}

/* Background Dynamic Decorations */
.background-blob {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, rgba(255, 255, 255, 0) 70%);
    top: -100px;
    right: -100px;
    z-index: -1;
    filter: blur(50px);
    animation: floating 10s infinite ease-in-out;
}

.background-blob.secondary {
    bottom: -100px;
    left: -100px;
    background: radial-gradient(circle, rgba(34, 197, 94, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
    animation-delay: -5s;
}

@keyframes floating {

    0%,
    100% {
        transform: translate(0, 0);
    }

    50% {
        transform: translate(-30px, 40px);
    }
}

.container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
    position: relative;
    z-index: 10;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 40px;
    padding: 60px 40px;
    box-shadow: var(--shadow);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

header h1 {
    font-weight: 300;
    font-size: 1.2rem;
    letter-spacing: 0.2rem;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.timer-display {
    font-size: 8rem;
    font-weight: 600;
    line-height: 1;
    margin: 10px 0;
    font-variant-numeric: tabular-nums;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.btn {
    padding: 16px 32px;
    border: none;
    border-radius: 20px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn.primary {
    background-color: var(--text-primary);
    color: white;
}

.btn.primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn.secondary {
    background-color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.btn.secondary:hover:not(:disabled) {
    background-color: #f8fafc;
}

.btn.tertiary {
    background: transparent;
    color: var(--text-secondary);
}

.btn.tertiary:hover {
    color: var(--text-primary);
}

/* Settings Styles */
.settings {
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
}

.settings-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.settings-group label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.input-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.input-wrapper span {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.settings-group input {
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--glass-border);
    font-family: inherit;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    width: 45px;
    text-align: center;
    outline: none;
    transition: border-color 0.3s ease;
}

.settings-group input:focus {
    border-bottom-color: var(--accent-focus);
}

.break-mode .settings-group input:focus {
    border-bottom-color: var(--accent-break);
}

/* Mode-specific colors for text/accents */
.focus-mode #timer {
    color: var(--accent-focus);
}

.break-mode #timer {
    color: var(--accent-break);
}