/* Common Styles for Duplicat's Site - Minimal Design */

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #666666;
    --accent-color: #E8E8E8;
    --success-color: #10B981;
    --bg-primary: #FAFAFA;
    --bg-surface: #FFFFFF;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #E8E8E8;
    --border-hover: #d0d0d0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 12px 0 rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 8px 24px 0 rgba(0, 0, 0, 0.08);
}

body.dark-mode {
    --bg-primary: #0A0A0A;
    --bg-surface: #141414;
    --text-primary: #F5F5F5;
    --text-secondary: #A0A0A0;
    --text-muted: #666666;
    --border-color: #2A2A2A;
    --border-hover: #3A3A3A;
    --primary-color: #F5F5F5;
    --accent-color: #2A2A2A;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--text-primary);
    line-height: 1.6;
    letter-spacing: -0.01em;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

body.dark-mode header {
    background: rgba(10, 10, 10, 0.95);
}

header.scrolled {
    border-bottom-color: var(--border-color);
}

.header-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo:hover {
    opacity: 0.7;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle {
    background: transparent;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--accent-color);
    color: var(--text-primary);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

.theme-toggle .sun {
    position: absolute;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
}

body.dark-mode .theme-toggle .sun {
    opacity: 1;
    transform: scale(1);
}

.theme-toggle .moon {
    position: absolute;
    opacity: 1;
    transform: scale(1);
    transition: all 0.3s ease;
}

body.dark-mode .theme-toggle .moon {
    opacity: 0;
    transform: scale(0.8);
}

/* Main Content */
main {
    flex: 1;
    max-width: 1000px;
    margin: 0 auto;
    padding: 4rem 2rem 6rem;
    width: 100%;
}

.page-header {
    margin-bottom: 3rem;
}

.page-title {
    font-size: 2.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--text-primary);
}

.page-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    font-weight: 300;
}

/* Tool Container */
.tool-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all 0.2s ease;
}

.tool-container:hover {
    border-color: var(--border-hover);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.938rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border: none;
}

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

.btn-primary:hover {
    opacity: 0.8;
}

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

.btn-secondary:hover {
    background: var(--border-hover);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--border-hover);
    background: var(--accent-color);
}

/* Form Elements */
input,
textarea,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s ease;
    margin-bottom: 1rem;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--border-hover);
    box-shadow: 0 0 0 3px var(--accent-color);
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* Results Section */
.result-section {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 2rem;
}

.result-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.result-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

/* Footer Actions */
.footer-actions {
    margin-top: 3rem;
    display: flex;
    gap: 1rem;
    justify-content: flex-start;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.938rem;
    transition: all 0.2s ease;
}

.back-link:hover {
    color: var(--text-primary);
}

/* Advertisement */
.ad-space {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin: 3rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    transition: all 0.2s ease;
}

.ad-space:hover {
    border-color: var(--border-hover);
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        padding: 1rem 1.5rem;
    }

    main {
        padding: 2rem 1.5rem 4rem;
    }

    .page-title {
        font-size: 1.75rem;
    }

    .page-description {
        font-size: 1rem;
    }

    .tool-container {
        padding: 1.5rem;
    }

    .result-value {
        font-size: 1.25rem;
    }
}