/* Design Tokens */
:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.35);
    
    /* Progress Colors */
    --color-safe: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.35);
    
    --border-radius-lg: 20px;
    --border-radius-md: 12px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* Ambient Background Glows */
.background-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    pointer-events: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 580px;
    padding: 20px;
    z-index: 1;
}

/* Glassmorphic Card */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 32px;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: relative;
    overflow: hidden;
}

.card.limit-exceeded {
    border-color: var(--color-danger);
    box-shadow: 0 20px 40px -15px rgba(239, 68, 68, 0.15), 
                0 0 0 1px var(--color-danger);
    animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}

/* Card Header */
.card-header {
    display: flex;
    gap: 16px;
    align-items: center;
}

.header-icon {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 12px;
    border-radius: var(--border-radius-md);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition-smooth);
}

.card.limit-exceeded .header-icon {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
}

.header-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge {
    background: rgba(255, 255, 255, 0.06);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Textarea Wrapper & Element */
.textarea-wrapper {
    position: relative;
    border-radius: var(--border-radius-md);
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--card-border);
    transition: var(--transition-smooth);
    overflow: hidden;
}

.textarea-wrapper:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.card.limit-exceeded .textarea-wrapper:focus-within {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 4px var(--danger-glow);
}

textarea {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    padding: 16px;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.6;
    resize: none;
    min-height: 150px;
}

textarea::placeholder {
    color: rgba(148, 163, 184, 0.4);
}

/* Custom Scrollbar for Textarea */
textarea::-webkit-scrollbar {
    width: 8px;
}

textarea::-webkit-scrollbar-track {
    background: transparent;
}

textarea::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

textarea::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Progress Bar at the bottom of textarea */
.progress-bar-container {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    position: absolute;
    bottom: 0;
    left: 0;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--color-safe);
    transition: width 0.1s ease-out, background-color 0.3s ease;
}

/* Card Footer */
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Status Indicator */
.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-secondary);
    position: relative;
    transition: var(--transition-smooth);
}

.status-dot::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    border: 1px solid currentColor;
    opacity: 0;
    transform: scale(0.8);
    transition: var(--transition-smooth);
}

.status-dot.active {
    background: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 0 8px var(--primary-color);
}

.status-dot.active::after {
    opacity: 0.4;
    transform: scale(1.3);
    animation: pulse 2s infinite;
}

.status-dot.warning {
    background: var(--color-warning);
    color: var(--color-warning);
    box-shadow: 0 0 8px var(--color-warning);
}

.status-dot.danger {
    background: var(--color-danger);
    color: var(--color-danger);
    box-shadow: 0 0 8px var(--color-danger);
    animation: flash 1s infinite alternate;
}

/* Counter Display */
.counter-display {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
}

.count-number {
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.count-separator, .count-limit {
    color: var(--text-secondary);
}

/* Counter States */
.counter-display.warning .count-number {
    color: var(--color-warning);
}

.counter-display.danger .count-number {
    color: var(--color-danger);
}

/* Warning Notification Banner */
.warning-alert {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    color: #fca5a5;
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
    transition: var(--transition-smooth);
    position: absolute;
    bottom: 24px;
    left: 32px;
    right: 32px;
    z-index: 2;
    backdrop-filter: blur(8px);
}

.warning-alert.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.warning-alert svg {
    flex-shrink: 0;
    color: var(--color-danger);
}

/* Keyframes Animations */
@keyframes pulse {
    0% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.5); opacity: 0; }
    100% { transform: scale(1); opacity: 0.4; }
}

@keyframes flash {
    0% { opacity: 0.4; box-shadow: none; }
    100% { opacity: 1; box-shadow: 0 0 12px var(--color-danger); }
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
}