/* --- CSS Variables for Theme --- */
:root {
    --color-bg: #e0e7ef;
    --color-bg2: #b6c6e2;
    --color-bg3: #f5f7fa;
    --color-accent: #69d5dd;
    --color-accent2: #4ecdc4;
    --color-dark: #23272b;
    --color-dark2: #2d3848;
    --color-light: #fff;
    --color-text: #222;
    --color-text-light: #e0e6f7;
    --color-shadow: rgba(0,0,0,0.18);
    --color-shadow-hover: rgba(0,0,0,0.22);
    --color-border: #69d5dd;
    --color-quote: #69d5dd;
    --glass-bg: rgba(255,255,255,0.85);
    --glass-dark-bg: rgba(30,34,38,0.92);
}

/* Make body and main fill viewport and prevent scrolling */
body {
    min-height: 100vh;
    height: 100vh;
    margin: 0;
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #e0e7ef 0%, #c3cfe2 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
    width: 100vw;
    max-width: 100vw;
    box-sizing: border-box;
    overflow: hidden;
}

main {
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    max-height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    padding: 0;
    overflow: hidden;
}

.timer {
    text-align: center;
    background: var(--glass-bg);
    box-shadow: 0 8px 32px 0 rgba(105,213,221,0.18), 0 1.5px 8px 0 rgba(0,0,0,0.08);
    border: 1.5px solid var(--color-border);
    padding: 32px 18px 24px 18px;
    border-radius: 28px;
    width: 95vw;
    max-width: 400px;
    min-width: 280px;
    margin: 0 auto;
    transition: box-shadow 0.2s, background 0.3s, max-width 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    position: relative;
}

.timer:hover {
    box-shadow: 0 16px 48px var(--color-shadow-hover), 0 2px 12px var(--color-accent2);
    border-color: var(--color-accent2);
}

.fullscreen {
    text-align: right;
}

.time {
    font-size: 8vw;
    margin-bottom: 2vw;
    color: var(--color-text);
    font-weight: 700;
    letter-spacing: 2px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.10);
    transition: font-size 0.2s;
}

.buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin: 18px 0 18px 0;
    width: 100%;
}

.buttons button {
    font-size: 22px;
    width: 54px;
    height: 44px;
    margin: 0;
    border-radius: 12px;
    transition: background 0.2s, color 0.2s, border 0.2s, box-shadow 0.2s, transform 0.1s;
    outline: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    background: linear-gradient(135deg, var(--color-bg3) 60%, var(--color-accent) 100%);
}

.buttons button:hover, .buttons button:focus-visible {
    background: linear-gradient(135deg, var(--color-accent2) 60%, var(--color-accent) 100%);
    color: #fff;
    border: var(--color-border) solid 2px;
    box-shadow: 0 0 0 2px var(--color-accent), 0 2px 12px rgba(0,0,0,0.12);
    transform: scale(1.07);
}

.custom-durations {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin: 12px 0 8px 0;
    flex-wrap: wrap;
    width: 100%;
}

.custom-durations input[type="number"] {
    width: 90px;
    padding: 8px 10px;
    font-size: 15px;
    border-radius: 7px;
    border: 1.5px solid var(--color-border);
    background: var(--color-bg3);
    color: var(--color-text);
    margin-bottom: 4px;
    outline: none;
    transition: border 0.2s, box-shadow 0.2s;
}

.custom-durations input[type="number"]:focus {
    border: 2px solid var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent);
}

.custom-durations button {
    padding: 8px 18px;
    font-size: 15px;
    border-radius: 7px;
    border: none;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.1s;
    outline: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.custom-durations button:hover, .custom-durations button:focus-visible {
    background: linear-gradient(135deg, #23272b 60%, #101214 100%);
    color: #fff;
    box-shadow: 0 0 0 2px var(--color-accent);
    transform: scale(1.05);
}

.mode-buttons {
    margin-bottom: 18px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    width: 100%;
}

.mode-buttons button {
    font-size: 24px;
    width: 54px;
    height: 54px;
    padding: 0;
    margin: 0;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-bg3) 60%, var(--color-bg2) 100%);
    color: var(--color-text);
    transition: background 0.2s, color 0.2s, border 0.2s, box-shadow 0.2s, transform 0.1s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    outline: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.mode-buttons button.active, .mode-buttons button:focus-visible {
    background: linear-gradient(135deg, var(--color-accent2) 60%, var(--color-accent) 100%);
    color: #fff;
    border-color: var(--color-border);
    outline: 2px solid var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent);
    transform: scale(1.08);
}

body.dark-mode {
    color: var(--color-text-light);
    background: #101214;
    transition: background 0.3s;
}

body.dark-mode .timer {
    background: var(--glass-dark-bg);
    color: var(--color-text-light);
    box-shadow: 0 8px 32px rgba(0,0,0,0.38);
}

body.dark-mode .mode-buttons button {
    background: var(--color-dark);
    color: var(--color-text-light);
    border-color: var(--color-border);
}

body.dark-mode .mode-buttons button.active, body.dark-mode .mode-buttons button:focus-visible {
    background: linear-gradient(135deg, var(--color-accent2) 60%, var(--color-accent) 100%);
    color: #101214;
    border-color: var(--color-border);
    outline: 2px solid var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent);
}

body.dark-mode.bg-gradient,
body.dark-mode.bg-forest,
body.dark-mode.bg-ocean,
body.dark-mode.bg-space {
    background: inherit;
}

/* --- End of button rules --- */

@media (max-width: 900px) {
    .timer {
        max-width: 98vw;
        padding: 18px 2vw;
    }
    .progress-circle {
        width: 120px;
        height: 120px;
    }
    .mode-buttons button, .buttons button {
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
    .custom-durations input[type="number"] {
        width: 70px;
        font-size: 13px;
        padding: 6px 8px;
    }
    .custom-durations button {
        padding: 6px 12px;
        font-size: 13px;
    }
}

@media (max-width: 600px) {
    .timer {
        width: 98vw;
        max-width: 98vw;
        min-width: unset;
        padding: 12px 2vw;
        margin: 0 auto;
        border-radius: 16px;
    }
    .progress-circle {
        width: 90px;
        height: 90px;
        min-width: 70px;
        min-height: 70px;
    }
    .mode-buttons button, .buttons button {
        width: 36px;
        height: 36px;
        font-size: 15px;
    }
    .custom-durations input[type="number"] {
        width: 50px;
        font-size: 11px;
        padding: 4px 6px;
    }
    .custom-durations button {
        padding: 4px 8px;
        font-size: 11px;
    }
}

/* Hide scrollbars and prevent scrolling */
html, body {
    overflow: hidden !important;
    height: 100vh;
    max-height: 100vh;
}

body.bg-gradient {
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2) !important;
}

/* Fix: dark gradient for dark mode + gradient */
body.dark-mode.bg-gradient {
    background: linear-gradient(135deg, #23272b 0%, #101214 100%) !important;
}

body.bg-forest {
    background: url('https://images.unsplash.com/photo-1506744038136-46273834b3fb?auto=format&fit=crop&w=1500&q=80') center/cover no-repeat !important;
}

body.bg-ocean {
    background: url('https://images.unsplash.com/photo-1464983953574-0892a716854b?auto=format&fit=crop&w=1500&q=80') center/cover no-repeat !important;
}

body.bg-space {
    background: url('https://images.unsplash.com/photo-1462331940025-496dfbfc7564?auto=format&fit=crop&w=1500&q=80') center/cover no-repeat !important;
}

.settings-bar {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 10;
    display: flex;
    gap: 10px;
    background: rgba(255,255,255,0.7);
    border-radius: 14px;
    padding: 8px 16px;
    box-shadow: 0 2px 16px rgba(105,213,221,0.10);
    align-items: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.settings-bar button, .settings-bar select {
    font-size: 18px;
    padding: 5px 10px;
    border-radius: 7px;
    border: 1.5px solid var(--color-border);
    background: var(--color-light);
    color: var(--color-text);
    box-shadow: none;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    outline: none;
}

.settings-bar button:hover, .settings-bar select:hover, .settings-bar button:focus-visible, .settings-bar select:focus-visible {
    background: linear-gradient(135deg, var(--color-accent2) 60%, var(--color-accent) 100%);
    color: #000;
    box-shadow: 0 0 0 2px var(--color-accent);
}

.settings-bar select {
    min-width: 80px;
    font-size: 15px;
}

body.dark-mode .settings-bar {
    background: rgba(24,28,31,0.95);
}

body.dark-mode .settings-bar button, body.dark-mode .settings-bar select {
    background: var(--color-dark);
    color: var(--color-text-light);
    border: 1px solid #444;
}

body.dark-mode .settings-bar button:hover, body.dark-mode .settings-bar select:hover, body.dark-mode .settings-bar button:focus-visible, body.dark-mode .settings-bar select:focus-visible {
    background: var(--color-accent);
    color: #101214;
    box-shadow: 0 0 0 2px var(--color-accent);
}

.progress-circle {
    position: relative;
    width: 160px;
    height: 160px;
    min-width: 120px;
    min-height: 120px;
    max-width: 180px;
    max-height: 180px;
    margin: 0 auto 16px auto;
    transition: width 0.2s, height 0.2s;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    box-shadow: 0 2px 12px rgba(105,213,221,0.10);
    display: flex;
    align-items: center;
    justify-content: center;
}

.progress-circle .time {
    font-size: 38px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -55%);
    color: #000000;
    font-weight: bold;
    width: 100%;
    text-align: center;
    letter-spacing: 2px;
    transition: font-size 0.2s;
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
    pointer-events: none;
}
.dark-mode .progress-circle .time {
    color: #ffffff;
}
.session-info {
    margin-bottom: 6px;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-accent2);
    letter-spacing: 1px;
    text-shadow: 0 1px 4px rgba(105,213,221,0.10);
}

.progress-info {
    margin-bottom: 10px;
    font-size: 13px;
    color: #888;
}

body.dark-mode .progress-info {
    color: #b0b0b0;
}

.quote {
    margin-top: 16px;
    font-size: 16px;
    color: var(--color-quote);
    font-style: italic;
    min-height: 22px;
    text-align: center;
    padding: 0 16px;
    transition: color 0.2s;
    text-shadow: 0 1px 4px rgba(105,213,221,0.10);
    width: 100%;
}

.advanced-options {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    margin: 4px 0 10px 0;
    color: #333;
    width: 100%;
}
.dark-mode .advanced-options {
    color: #ccc;
}
/* Settings bar */
.settings-bar {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 10;
    display: flex;
    gap: 10px;
    background: rgba(255,255,255,0.7);
    border-radius: 14px;
    padding: 8px 16px;
    box-shadow: 0 2px 16px rgba(105,213,221,0.10);
    align-items: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.settings-bar button, .settings-bar select {
    font-size: 18px;
    padding: 5px 10px;
    border-radius: 7px;
    border: 1.5px solid var(--color-border);
    background: var(--color-light);
    color: var(--color-text);
    box-shadow: none;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    outline: none;
}

.settings-bar button:hover, .settings-bar select:hover, .settings-bar button:focus-visible, .settings-bar select:focus-visible {
    background: linear-gradient(135deg, var(--color-accent2) 60%, var(--color-accent) 100%);
    color: #000;
    box-shadow: 0 0 0 2px var(--color-accent);
}

.settings-bar select {
    min-width: 80px;
    font-size: 15px;
}

body.dark-mode .settings-bar {
    background: rgba(24,28,31,0.95);
}

body.dark-mode .settings-bar button, body.dark-mode .settings-bar select {
    background: var(--color-dark);
    color: var(--color-text-light);
    border: 1px solid #444;
}

body.dark-mode .settings-bar button:hover, body.dark-mode .settings-bar select:hover, body.dark-mode .settings-bar button:focus-visible, body.dark-mode .settings-bar select:focus-visible {
    background: var(--color-accent);
    color: #101214;
    box-shadow: 0 0 0 2px var(--color-accent);
}

.progress-circle {
    position: relative;
    width: 160px;
    height: 160px;
    min-width: 120px;
    min-height: 120px;
    max-width: 180px;
    max-height: 180px;
    margin: 0 auto 16px auto;
    transition: width 0.2s, height 0.2s;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    box-shadow: 0 2px 12px rgba(105,213,221,0.10);
    display: flex;
    align-items: center;
    justify-content: center;
}

.progress-circle .time {
    font-size: 38px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -55%);
    color: #000000;
    font-weight: bold;
    width: 100%;
    text-align: center;
    letter-spacing: 2px;
    transition: font-size 0.2s;
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
    pointer-events: none;
}
.dark-mode .progress-circle .time {
    color: #ffffff;
}
.session-info {
    margin-bottom: 6px;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-accent2);
    letter-spacing: 1px;
    text-shadow: 0 1px 4px rgba(105,213,221,0.10);
}

.progress-info {
    margin-bottom: 10px;
    font-size: 13px;
    color: #888;
}

body.dark-mode .progress-info {
    color: #b0b0b0;
}

.quote {
    margin-top: 16px;
    font-size: 16px;
    color: var(--color-quote);
    font-style: italic;
    min-height: 22px;
    text-align: center;
    padding: 0 16px;
    transition: color 0.2s;
    text-shadow: 0 1px 4px rgba(105,213,221,0.10);
    width: 100%;
}

.advanced-options {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    margin: 4px 0 10px 0;
    color: #333;
    width: 100%;
}

/* Add smooth transitions for all elements */
* {
    box-sizing: border-box;
    transition: background 0.2s, color 0.2s, border 0.2s, box-shadow 0.2s;
}