:root {
    --black: #000000;
    --near-black: #1a1a1a;
    --dark-gray: #2d2d2d;
    --mid-gray: #555555;
    --gray: #888888;
    --light-gray: #b0b0b0;
    --pale-gray: #d0d0d0;
    --off-white: #e8e8e8;
    --white: #ffffff;

    --primary: var(--near-black);
    --primary-dark: var(--black);
    --text-primary: var(--near-black);
    --text-secondary: var(--mid-gray);
    --bg-gray: #f0f0f0;
    --bg-result: #f5f5f5;
    --border-result: var(--pale-gray);
    --divider: var(--pale-gray);

    --success: #4a4a4a;
    --warning: #666666;
    --error: #333333;
    --error-dark: var(--near-black);

    --shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.35);
    --radius: 8px;
    --radius-lg: 16px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    color: var(--text-primary);
    line-height: 1.5;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: #1a1a1a;
    background-image: url('https://galeri13.uludagsozluk.com/639/jagermeister_1600403.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    filter: grayscale(100%) brightness(0.7);
}

.app-container {
    width: 100%;
    max-width: 640px;
    padding: 40px 20px;
}

.card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--pale-gray);
    backdrop-filter: blur(10px);
}

.card-content {
    padding: 32px;
}

@media (max-width: 600px) {
    .app-container {
        padding: 20px 12px;
    }

    .card-content {
        padding: 20px 16px;
    }
}

.header {
    text-align: center;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--black);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    letter-spacing: -0.5px;
    text-transform: uppercase;
}

.header .icon {
    font-size: 1.5rem;
    filter: grayscale(100%);
}

.section {
    margin-bottom: 20px;
}

.section-gray {
    background: var(--bg-gray);
    padding: 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    border: 1px solid var(--pale-gray);
}

.section-title {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--mid-gray);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}

.toggle-group {
    display: flex;
    border: 2px solid var(--black);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 16px;
}

.toggle-btn {
    flex: 1;
    padding: 10px 16px;
    border: none;
    background: var(--white);
    color: var(--black);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.toggle-btn:not(:last-child) {
    border-right: 2px solid var(--black);
}

.toggle-btn:hover {
    background: var(--off-white);
}

.toggle-btn.active {
    background: var(--black);
    color: var(--white);
}

.row {
    display: flex;
    gap: 16px;
}

.row>* {
    flex: 1;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--mid-gray);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid var(--pale-gray);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--white);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--black);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.form-group input::-webkit-inner-spin-button {
    opacity: 1;
}

.helper-text {
    display: block;
    font-size: 0.8rem;
    color: var(--gray);
    margin-top: 4px;
    font-style: italic;
}

.select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.select-wrapper .select-icon {
    position: absolute;
    left: 12px;
    font-size: 1.1rem;
    pointer-events: none;
    z-index: 1;
    filter: grayscale(100%);
}

.select-wrapper select {
    padding-left: 40px;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23000000' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    cursor: pointer;
}

.divider {
    border: none;
    border-top: 1px solid var(--pale-gray);
    margin: 24px 0;
}

.drink-item {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    margin-bottom: 16px;
    padding: 14px;
    background: var(--bg-gray);
    border-radius: var(--radius);
    border: 1px solid var(--pale-gray);
}

.drink-fields {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.drink-row {
    display: flex;
    gap: 10px;
}

.drink-row>* {
    flex: 1;
}

.drink-item .form-group {
    margin-bottom: 0;
}

.drink-item select,
.drink-item input {
    padding: 10px 12px;
    font-size: 0.9rem;
}

.btn-delete {
    width: 40px;
    height: 40px;
    border: 2px solid var(--pale-gray);
    background: var(--white);
    color: var(--dark-gray);
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    margin-top: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-delete:hover:not(:disabled) {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.btn-delete:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-icon {
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--black);
    color: var(--white);
    padding: 16px 20px;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.btn-primary:hover {
    background: var(--dark-gray);
    box-shadow: var(--shadow-hover);
    transform: translateY(-1px);
}

.btn-outlined {
    background: transparent;
    border: 2px dashed var(--mid-gray);
    color: var(--mid-gray);
}

.btn-outlined:hover {
    border-color: var(--black);
    color: var(--black);
    background: var(--off-white);
}

.btn-dashed {
    border-style: dashed;
}

.btn-large {
    margin: 24px 0;
}

.result-box {
    text-align: center;
    padding: 28px;
    background: var(--near-black);
    border: none;
    border-radius: var(--radius);
    margin-top: 24px;
    color: var(--white);
}

.result-box.hidden {
    display: none;
}

.result-box.show {
    display: block;
    animation: fadeIn 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.result-value {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--white);
    line-height: 1.1;
    letter-spacing: -2px;
}

.result-status {
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.result-time {
    font-size: 0.95rem;
    color: var(--light-gray);
    margin-top: 16px;
}

.result-time strong {
    color: var(--white);
}

.status-success {
    color: var(--light-gray);
}

.status-warning {
    color: var(--pale-gray);
}

.status-error {
    color: #ff6b6b;
}

.status-danger {
    color: #ff4444;
}

.status-critical {
    color: #ff0000;
}

.alert {
    display: flex;
    gap: 12px;
    padding: 16px;
    border-radius: var(--radius);
    margin-top: 32px;
    font-size: 0.8rem;
    line-height: 1.7;
}

.alert-info {
    background: var(--off-white);
    border: 1px solid var(--pale-gray);
    color: var(--mid-gray);
}

.alert-info strong {
    color: var(--black);
}

.alert-icon {
    font-size: 1rem;
    flex-shrink: 0;
    filter: grayscale(100%);
}

.alert-content {
    flex: 1;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}