:root {
    --color-primary: #4299E1;
    --color-primary-dark: #2B6CB0;
    --color-bg-primary: #F0F4F8;
    --color-bg-light: #F7FAFC;
    --color-text-primary: #1A365D;
    --color-text-secondary: #4A5568;
    --color-text-dark: #2D3748;
    --color-text-light: #718096;
    --color-text: #4A5568;
    --color-accent: #4299E1;
    --color-success: #48BB78;
    --color-warning: #ECC94B;
    --color-danger: #F56565;
    --color-danger-dark: #C53030;
    --color-white: #FFFFFF;
    --color-border: #E2E8F0;
    --spacing-unit: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* Grid System */
.grid {
    display: grid;
    gap: calc(var(--spacing-unit) * 2);
}

@media (min-width: 768px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.btn--primary:hover {
    background-color: var(--color-primary-dark);
}

.btn--secondary {
    background-color: white;
    color: var(--color-text-primary);
    border: 1px solid #E2E8F0;
}

.btn--secondary:hover {
    background-color: var(--color-bg-primary);
    border-color: #CBD5E1;
}

/* Voice Recording Component */
.voice-input {
    background: white;
    border-radius: 12px;
    padding: calc(var(--spacing-unit) * 3);
    margin: calc(var(--spacing-unit) * 2) 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.voice-input__container {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
}

.voice-input__status {
    font-size: 0.9rem;
    color: var(--color-text-primary);
}

/* Animations */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.recording {
    animation: pulse 1.5s infinite;
}

/* Header */
.header {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

/* Navigation */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.nav__logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.nav__menu {
    margin-left: auto;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav__item {
    position: relative;
}

.nav__link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.nav__link:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-light);
}

.nav__link.active {
    color: var(--color-primary);
    background-color: var(--color-bg-light);
}

.nav__user-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    background-color: var(--color-bg-light);
}

/* Responsive navigation */
@media screen and (max-width: 768px) {
    .nav__list {
        gap: 1rem;
    }

    .nav__link {
        padding: 0.5rem;
    }

    .nav__link i {
        font-size: 1.2rem;
    }

    .nav__link span {
        display: none;
    }

    .nav__user-name span {
        display: none;
    }
}

/* Main Content */
.main {
    min-height: calc(100vh - 150px);
}

/* Utility Classes */
.bg-primary {
    background-color: var(--color-bg-primary);
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: calc(var(--spacing-unit) * 1); }
.mt-2 { margin-top: calc(var(--spacing-unit) * 2); }
.mt-3 { margin-top: calc(var(--spacing-unit) * 3); }
.mt-4 { margin-top: calc(var(--spacing-unit) * 4); }
.mt-5 { margin-top: calc(var(--spacing-unit) * 5); }

.mb-1 { margin-bottom: calc(var(--spacing-unit) * 1); }
.mb-2 { margin-bottom: calc(var(--spacing-unit) * 2); }
.mb-3 { margin-bottom: calc(var(--spacing-unit) * 3); }
.mb-4 { margin-bottom: calc(var(--spacing-unit) * 4); }
.mb-5 { margin-bottom: calc(var(--spacing-unit) * 5); }